Classification of elements
•Download as PPTX, PDF•
1 like•153 views
Elements are classified based on the type of orbital being filled with electrons. There are four blocks of elements: 1) S-block elements have electrons filling their s orbitals and include alkali metals and alkaline earth metals. 2) P-block elements have electrons filling their p orbitals and include groups 13-18. They are also known as representative elements. 3) D-block elements have electrons filling their d orbitals and are also called transition metals. They have variable oxidation states. 4) F-block elements have electrons filling their f orbitals and are also called inner transition metals. They are all metals with complex chemistry and many are radioactive.
Report
Share
Report
Share
Recommended
Chemistry Presentation
This document provides an overview of chemistry concepts including:
- Matter is anything that occupies space and has mass. Atoms are the smallest particle of an element and consist of protons, neutrons, and electrons.
- Elements combine in fixed proportions to form compounds. Chemical reactions involve breaking and forming bonds to create new substances.
- Living things require energy, obtained through exergonic reactions like cellular respiration. Catalysts like enzymes lower reaction activation energies.
- Solutions are uniform mixtures where particles of solute are distributed within a solvent. Aqueous solutions in living things are important for biochemical reactions. Acids and bases are defined by hydronium and hydroxide ion concentrations measured on the pH scale.
Periodic Classification of Elements and Periodicity
The document discusses the history and development of the periodic table. It explains that early scientists like Dobereiner and Newlands began classifying elements based on their properties, but that Dmitri Mendeleev created the first recognizable periodic table in 1871. His table arranged elements in order of atomic mass and predicted properties of undiscovered elements. Later, Moseley's discovery of atomic number allowed the modern periodic table to arrange elements by atomic number instead of mass. The document also discusses trends in properties within the periodic table.
S-Block Elements
This document discusses the characteristic properties of s-block elements, which include the alkali metals (Group IA) and alkaline earth metals (Group IIA). Some key points discussed include:
- S-block elements have their outermost shell electrons in the s orbital.
- Alkali metals react vigorously with water to form alkaline hydroxides and hydrogen gas. Reactivity increases down the group.
- They form oxides, peroxides, and superoxides with oxygen. Oxidation states include -2, -1, and -1/2.
- Properties such as ionization energy, hydration energy, and metallic character generally decrease or increase moving down a group and across a period,
Basic concept of Chemistry
Presentation is for the first chapter of class 11th Chemistry CBSE board. Presentation is having detailed description for some of the basic concepts like mole concept, matter in our surrounding etc.
Atoms and molecules
Atoms are the smallest particles that make up all matter. John Dalton's atomic theory states that all matter is made of tiny indivisible particles called atoms. Atoms of different elements have different masses and chemical properties. Two or more atoms can combine to form molecules, which are the smallest units that retain the properties of a substance. Molecules are formed when atoms bond together via chemical bonds and are the smallest particles that can exist independently. Common examples of molecules include water (H2O) and oxygen (O2).
Intro to Chemistry Powerpoint- Minerva School
This document provides an introduction to chemistry, including what chemistry is, the five main branches of chemistry, and some key concepts about matter. It defines chemistry as the study of matter and its properties. The five branches are inorganic, organic, analytical, physical, and biochemistry. Matter is defined as anything that has mass and takes up space, and can exist in solid, liquid, or gas states. Chemical and physical properties are also introduced.
Atomic Structure
The document provides information about atomic structure including:
- Atoms are made up of protons, neutrons, and electrons.
- Elements are arranged in the periodic table based on their atomic structure.
- The periodic table is organized into periods and groups based on similarities in electrons and properties.
- Electrons fill atomic orbitals according to specific rules, with the first shell holding up to 2 electrons and subsequent shells holding up to 8 electrons each.
Periodic table
The periodic table and all it elements. The presentation talks about all the periodic table. it also has the difference between periods and groups.
Recommended
Chemistry Presentation
This document provides an overview of chemistry concepts including:
- Matter is anything that occupies space and has mass. Atoms are the smallest particle of an element and consist of protons, neutrons, and electrons.
- Elements combine in fixed proportions to form compounds. Chemical reactions involve breaking and forming bonds to create new substances.
- Living things require energy, obtained through exergonic reactions like cellular respiration. Catalysts like enzymes lower reaction activation energies.
- Solutions are uniform mixtures where particles of solute are distributed within a solvent. Aqueous solutions in living things are important for biochemical reactions. Acids and bases are defined by hydronium and hydroxide ion concentrations measured on the pH scale.
Periodic Classification of Elements and Periodicity
The document discusses the history and development of the periodic table. It explains that early scientists like Dobereiner and Newlands began classifying elements based on their properties, but that Dmitri Mendeleev created the first recognizable periodic table in 1871. His table arranged elements in order of atomic mass and predicted properties of undiscovered elements. Later, Moseley's discovery of atomic number allowed the modern periodic table to arrange elements by atomic number instead of mass. The document also discusses trends in properties within the periodic table.
S-Block Elements
This document discusses the characteristic properties of s-block elements, which include the alkali metals (Group IA) and alkaline earth metals (Group IIA). Some key points discussed include:
- S-block elements have their outermost shell electrons in the s orbital.
- Alkali metals react vigorously with water to form alkaline hydroxides and hydrogen gas. Reactivity increases down the group.
- They form oxides, peroxides, and superoxides with oxygen. Oxidation states include -2, -1, and -1/2.
- Properties such as ionization energy, hydration energy, and metallic character generally decrease or increase moving down a group and across a period,
Basic concept of Chemistry
Presentation is for the first chapter of class 11th Chemistry CBSE board. Presentation is having detailed description for some of the basic concepts like mole concept, matter in our surrounding etc.
Atoms and molecules
Atoms are the smallest particles that make up all matter. John Dalton's atomic theory states that all matter is made of tiny indivisible particles called atoms. Atoms of different elements have different masses and chemical properties. Two or more atoms can combine to form molecules, which are the smallest units that retain the properties of a substance. Molecules are formed when atoms bond together via chemical bonds and are the smallest particles that can exist independently. Common examples of molecules include water (H2O) and oxygen (O2).
Intro to Chemistry Powerpoint- Minerva School
This document provides an introduction to chemistry, including what chemistry is, the five main branches of chemistry, and some key concepts about matter. It defines chemistry as the study of matter and its properties. The five branches are inorganic, organic, analytical, physical, and biochemistry. Matter is defined as anything that has mass and takes up space, and can exist in solid, liquid, or gas states. Chemical and physical properties are also introduced.
Atomic Structure
The document provides information about atomic structure including:
- Atoms are made up of protons, neutrons, and electrons.
- Elements are arranged in the periodic table based on their atomic structure.
- The periodic table is organized into periods and groups based on similarities in electrons and properties.
- Electrons fill atomic orbitals according to specific rules, with the first shell holding up to 2 electrons and subsequent shells holding up to 8 electrons each.
Periodic table
The periodic table and all it elements. The presentation talks about all the periodic table. it also has the difference between periods and groups.
Atoms and Molecules
This document discusses the history and development of atomic theory. It describes how ancient Indian and Greek philosophers first proposed that matter is divisible into smaller particles. Democritus named these indivisible particles "atoms." Later, scientists like John Dalton and Antoine Lavoisier established laws of chemistry, including the law of conservation of mass and the law of constant proportions, which supported the atomic theory. Dalton further proposed that elements are made of atoms that combine in whole number ratios. The document defines key concepts like molecules, ions, chemical formulas, and moles. It provides examples of atomic structure and molecular formulas of common compounds.
Chapter 1 Introduction to Chemistry
Chemistry is the study of the composition, structure, properties and interactions of matter. It involves investigating what chemicals are made of, how elements interact with each other, and how to produce useful new chemicals. Chemistry is important for fields like medicine, agriculture, materials science, and more. The scientific method is the systematic process used in chemistry and other sciences to solve problems, involving steps like making observations and inferences, identifying variables, designing experiments, collecting and analyzing data, and reporting findings.
Atomic structure
1. The document traces the history of ideas about the atom from Democritus' idea of indivisible atoms in 460 BC to Bohr's model of electrons orbiting the nucleus in 1913.
2. In the early 1900s, Rutherford discovered that atoms have a small, dense nucleus through experiments showing some alpha particles rebounding from gold foil.
3. Bohr refined Rutherford's nuclear model by proposing that electrons orbit the nucleus in set energy levels, like planets orbiting the sun. This helped explain atomic structure and properties.
Periodic classification of elements
The document discusses the periodic classification of elements. It describes early attempts at classification by Dobereiner, Newlands, and Mendeleev. Mendeleev organized the elements into a periodic table based on atomic mass and properties. The modern periodic table arranges elements by atomic number and has 7 periods and 18 groups. Properties like valence electrons, valency, and atomic size are periodic within periods and groups based on the element's position in the table.
Atomic Structure and Bonding
The document discusses atomic structure and bonding. It covers subatomic particles like protons, neutrons and electrons. It defines atomic number and atomic mass. Electrons orbit the nucleus in energy levels. Ionic bonding occurs when atoms gain or lose electrons to achieve full outer shells, forming ions. Covalent bonding occurs when atoms share electrons. Ionic bonds are usually strong solids while covalent bonds are weaker liquids or gases.
Group IA.pdf
The document summarizes the properties and reactivity of alkali metals. It discusses their physical properties including softness, low density, and good heat and electricity conductivity. It describes their chemical reactivity including reactions with oxygen, halogens, nitrogen, carbon, and water. Alkali metals readily lose their outer shell electron to form +1 ions. Their reactivity increases down the group as atomic size increases. Common compounds include oxides, hydroxides, peroxides, and superoxides. Sodium and potassium are the most abundant in nature while lithium, rubidium, and cesium are rarer.
P – block elements 12 Classes
The document discusses the group 16 (oxygen family) elements of the periodic table. It covers their general electronic configuration of ns2np4, trends in periodic properties like atomic radius and ionization energy decreasing down the group. It describes the common oxidation states of -2, +2, +4 and +6. It also discusses the formation of hydrides, halides, oxides and reactions with air, acids, alkalis and metals for these chalcogen elements.
Periodic calssification of elements ncert shashikumar b s
The document provides an overview of the periodic classification of elements. It discusses early attempts at classification including Dobereiner's triads and Newlands' law of octaves. It then covers Mendeleev's periodic table, including its merits and defects. Finally, it describes the modern periodic table based on atomic number, including periodic trends in properties like atomic size and electronegativity across periods and down groups. Key topics covered include the groups and periods in the modern table, how to read and understand its layout, and common questions about periodic trends and properties.
Ppt xii p block elements , By Dr Mona Srivastava
This is an effort to make ppt of p block elements , a topic in XII, chemistry(cbse) , whom as a tutor i have often felt students are horrified due to its large text size, long descriptipns, several information to be remembered and several reasonings to keep in mind.
Hope this ppt would solve thier problem of a thorough preparation of topic with all important aspects covered in the ppt.
Founder Dr Mona Srivastava
Masterchemclasses
Valency
Learning Objectives:
1. Understand what is valency
2. Learn how to define valences of elements
3. Learn normal and excited states of atoms
4. Learn how to determine chemical formula of molecules
5. Understand why atoms are grouped in molecules
Struture of an atom
This document provides an outline for a presentation on the history and structure of atoms. It begins with the early ideas of Democritus and Thomson, then describes the atomic models of Rutherford, Bohr, and others. The structure of the atom is explained, including the nucleus, protons, neutrons, and electrons. Isotopes and isobars are also introduced. The presentation would provide details on the key scientists and experiments that led to the current understanding of atoms as tiny particles consisting of a nucleus surrounded by electrons.
Class 11 chapter 3 Cassification of elements and periodicity in properties ppt
The document discusses periodic trends in properties of elements including atomic and ionic radii and ionization energy. It states that atomic radii decreases and ionization energy increases moving left to right across a period as nuclear charge increases. Atomic radii increases down a group as new shells are added and electrons are farther from the nucleus. Ionic radii follow similar trends as atomic radii. Ionization energy is the minimum energy required to remove an electron from an isolated gaseous atom.
Chemistry(class11)-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
The document discusses the history and development of the periodic table. It explains that:
1) Elements have been organized into the periodic table based on their atomic weights and properties in order to systematically study and predict chemical behavior.
2) Early periodic tables were proposed by scientists like Dobereiner, Newlands, and Mendeleev based on trends in atomic weights, though Mendeleev's 1869 table was the most successful in predicting new elements.
3) Modern periodic tables are arranged by atomic number according to the periodic law proposed by Moseley, with elements grouped into blocks based on their electron configurations. The table better explains trends in physical and chemical properties.
Valency
Valency refers to an element's combining power when forming compounds, and is determined by the number of electrons in the outer shell. Elements in the same group of the periodic table share the same valency, as shown in the valency table where group number corresponds to valency. Valency was developed in the 19th century to explain molecular structures of inorganic and organic compounds.
HYDRIDES
There are four main types of hydrides: saline (ionic), metallic, covalent, and dimeric. Saline hydrides contain hydrogen as a negatively charged ion that reacts violently with water to produce hydrogen gas. Metallic hydrides consist of hydrogen ions and metal atoms in an electron sea. Covalent hydrides involve shared electron pairs between hydrogen and nonmetals, forming volatile liquids and gases. Hydrides have many applications including use as reducing agents, bases, drying agents, and hydrogen storage in batteries and fuel cells.
Salts and their preparation power point
Salts are formed when hydrogen ions in acids are replaced by metal ions or ammonium ions. There are two main types of salts - normal salts that do not contain replaceable hydrogen and acidic salts that contain replaceable hydrogen. Insoluble salts are prepared through precipitation reactions by mixing solutions of reactants containing the ions of the insoluble salt. Soluble salts can be prepared through filtration and crystallization using excess insoluble reactants or through titration using exact quantities of reactants.
Classification of elements
The document summarizes the historical development of the periodic table. It discusses early classification attempts by scientists like Dobereiner, Newlands, and Meyer. Mendeleev organized the 63 known elements into the first recognizable periodic table in 1869 based on periodic trends in their properties. Moseley's work on X-ray spectra led to the modern periodic table being arranged by atomic number instead of atomic mass. The periodic table is now understood to result from the periodic repetition of electronic structures as electrons fill different atomic orbitals in shells.
CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
periodic table, modern periodic law, nomenclature of elements greater than 100,electronic configuration and types of elements,periodic trends in properties of elements.ionization enthalpy, effective nuclear charge, electronegativity, s, p d and f block elements, covalent radius, ionic radius, predicition of group, period and block, electron gain enthalpy, periodic trends and chemical reactivity
The periodic table
The periodic table arranges the chemical elements in order of atomic number so that elements with similar properties fall into columns known as groups. The standard periodic table includes periods (horizontal rows) and groups (vertical columns), with elements in the same group having similar properties. Dmitri Mendeleev is credited with developing the first recognizable periodic table in 1869, arranging the known elements based on their atomic masses and properties. While earlier scientists like Lavoisier and Döbereiner identified patterns among elements, Mendeleev's periodic table was the first to systematically organize all known elements and also predict properties of undiscovered elements.
Types Of Chemical Bonds- Ionic Bond,Covalent Bonds,Coordinate Bonds, Basic In...
The document discusses different types of chemical bonds formed by atoms to achieve stable inert gas electronic configurations:
1) Ionic bonds occur through complete electron transfer between atoms, making one positively charged and one negatively charged. The ions are then held together by electrostatic attraction.
2) Covalent bonds involve sharing of electrons between atoms of similar electronegativity to attain stable configurations.
3) Coordinate bonds are a type of covalent bond where both shared electrons are donated by one atom to an acceptor atom in need of electrons.
Chapter 14 d and f block elements
This document discusses the key concepts from Chapter 14 of the chemistry textbook. It covers d-block and f-block elements in the periodic table, including their electronic structures, properties, and important reactions. The chapter is divided into several sections, including an introduction to periodic table, transition elements, general features of transition elements, coordination compounds, and the chemistry of some important transition elements such as vanadium, chromium, manganese, iron and copper.
Chemistry of elements
This document discusses the properties of transition elements, specifically the first transition series elements from Scandium to Zinc. It provides information on their electronic configuration, atomic and ionic radii, ionization potential, and oxidation states. The key points are:
1) The first transition series elements belong to the 3d series, with their last electron entering the 3d subshell. Their general electronic configuration is [Ar] 4s1-2, 3d1-10.
2) Their atomic and ionic radii depend on nuclear charge, number of shells, and screening effect.
3) Ionization potential also depends on these three factors and represents the minimum energy required to remove an electron.
More Related Content
What's hot
Atoms and Molecules
This document discusses the history and development of atomic theory. It describes how ancient Indian and Greek philosophers first proposed that matter is divisible into smaller particles. Democritus named these indivisible particles "atoms." Later, scientists like John Dalton and Antoine Lavoisier established laws of chemistry, including the law of conservation of mass and the law of constant proportions, which supported the atomic theory. Dalton further proposed that elements are made of atoms that combine in whole number ratios. The document defines key concepts like molecules, ions, chemical formulas, and moles. It provides examples of atomic structure and molecular formulas of common compounds.
Chapter 1 Introduction to Chemistry
Chemistry is the study of the composition, structure, properties and interactions of matter. It involves investigating what chemicals are made of, how elements interact with each other, and how to produce useful new chemicals. Chemistry is important for fields like medicine, agriculture, materials science, and more. The scientific method is the systematic process used in chemistry and other sciences to solve problems, involving steps like making observations and inferences, identifying variables, designing experiments, collecting and analyzing data, and reporting findings.
Atomic structure
1. The document traces the history of ideas about the atom from Democritus' idea of indivisible atoms in 460 BC to Bohr's model of electrons orbiting the nucleus in 1913.
2. In the early 1900s, Rutherford discovered that atoms have a small, dense nucleus through experiments showing some alpha particles rebounding from gold foil.
3. Bohr refined Rutherford's nuclear model by proposing that electrons orbit the nucleus in set energy levels, like planets orbiting the sun. This helped explain atomic structure and properties.
Periodic classification of elements
The document discusses the periodic classification of elements. It describes early attempts at classification by Dobereiner, Newlands, and Mendeleev. Mendeleev organized the elements into a periodic table based on atomic mass and properties. The modern periodic table arranges elements by atomic number and has 7 periods and 18 groups. Properties like valence electrons, valency, and atomic size are periodic within periods and groups based on the element's position in the table.
Atomic Structure and Bonding
The document discusses atomic structure and bonding. It covers subatomic particles like protons, neutrons and electrons. It defines atomic number and atomic mass. Electrons orbit the nucleus in energy levels. Ionic bonding occurs when atoms gain or lose electrons to achieve full outer shells, forming ions. Covalent bonding occurs when atoms share electrons. Ionic bonds are usually strong solids while covalent bonds are weaker liquids or gases.
Group IA.pdf
The document summarizes the properties and reactivity of alkali metals. It discusses their physical properties including softness, low density, and good heat and electricity conductivity. It describes their chemical reactivity including reactions with oxygen, halogens, nitrogen, carbon, and water. Alkali metals readily lose their outer shell electron to form +1 ions. Their reactivity increases down the group as atomic size increases. Common compounds include oxides, hydroxides, peroxides, and superoxides. Sodium and potassium are the most abundant in nature while lithium, rubidium, and cesium are rarer.
P – block elements 12 Classes
The document discusses the group 16 (oxygen family) elements of the periodic table. It covers their general electronic configuration of ns2np4, trends in periodic properties like atomic radius and ionization energy decreasing down the group. It describes the common oxidation states of -2, +2, +4 and +6. It also discusses the formation of hydrides, halides, oxides and reactions with air, acids, alkalis and metals for these chalcogen elements.
Periodic calssification of elements ncert shashikumar b s
The document provides an overview of the periodic classification of elements. It discusses early attempts at classification including Dobereiner's triads and Newlands' law of octaves. It then covers Mendeleev's periodic table, including its merits and defects. Finally, it describes the modern periodic table based on atomic number, including periodic trends in properties like atomic size and electronegativity across periods and down groups. Key topics covered include the groups and periods in the modern table, how to read and understand its layout, and common questions about periodic trends and properties.
Ppt xii p block elements , By Dr Mona Srivastava
This is an effort to make ppt of p block elements , a topic in XII, chemistry(cbse) , whom as a tutor i have often felt students are horrified due to its large text size, long descriptipns, several information to be remembered and several reasonings to keep in mind.
Hope this ppt would solve thier problem of a thorough preparation of topic with all important aspects covered in the ppt.
Founder Dr Mona Srivastava
Masterchemclasses
Valency
Learning Objectives:
1. Understand what is valency
2. Learn how to define valences of elements
3. Learn normal and excited states of atoms
4. Learn how to determine chemical formula of molecules
5. Understand why atoms are grouped in molecules
Struture of an atom
This document provides an outline for a presentation on the history and structure of atoms. It begins with the early ideas of Democritus and Thomson, then describes the atomic models of Rutherford, Bohr, and others. The structure of the atom is explained, including the nucleus, protons, neutrons, and electrons. Isotopes and isobars are also introduced. The presentation would provide details on the key scientists and experiments that led to the current understanding of atoms as tiny particles consisting of a nucleus surrounded by electrons.
Class 11 chapter 3 Cassification of elements and periodicity in properties ppt
The document discusses periodic trends in properties of elements including atomic and ionic radii and ionization energy. It states that atomic radii decreases and ionization energy increases moving left to right across a period as nuclear charge increases. Atomic radii increases down a group as new shells are added and electrons are farther from the nucleus. Ionic radii follow similar trends as atomic radii. Ionization energy is the minimum energy required to remove an electron from an isolated gaseous atom.
Chemistry(class11)-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
The document discusses the history and development of the periodic table. It explains that:
1) Elements have been organized into the periodic table based on their atomic weights and properties in order to systematically study and predict chemical behavior.
2) Early periodic tables were proposed by scientists like Dobereiner, Newlands, and Mendeleev based on trends in atomic weights, though Mendeleev's 1869 table was the most successful in predicting new elements.
3) Modern periodic tables are arranged by atomic number according to the periodic law proposed by Moseley, with elements grouped into blocks based on their electron configurations. The table better explains trends in physical and chemical properties.
Valency
Valency refers to an element's combining power when forming compounds, and is determined by the number of electrons in the outer shell. Elements in the same group of the periodic table share the same valency, as shown in the valency table where group number corresponds to valency. Valency was developed in the 19th century to explain molecular structures of inorganic and organic compounds.
HYDRIDES
There are four main types of hydrides: saline (ionic), metallic, covalent, and dimeric. Saline hydrides contain hydrogen as a negatively charged ion that reacts violently with water to produce hydrogen gas. Metallic hydrides consist of hydrogen ions and metal atoms in an electron sea. Covalent hydrides involve shared electron pairs between hydrogen and nonmetals, forming volatile liquids and gases. Hydrides have many applications including use as reducing agents, bases, drying agents, and hydrogen storage in batteries and fuel cells.
Salts and their preparation power point
Salts are formed when hydrogen ions in acids are replaced by metal ions or ammonium ions. There are two main types of salts - normal salts that do not contain replaceable hydrogen and acidic salts that contain replaceable hydrogen. Insoluble salts are prepared through precipitation reactions by mixing solutions of reactants containing the ions of the insoluble salt. Soluble salts can be prepared through filtration and crystallization using excess insoluble reactants or through titration using exact quantities of reactants.
Classification of elements
The document summarizes the historical development of the periodic table. It discusses early classification attempts by scientists like Dobereiner, Newlands, and Meyer. Mendeleev organized the 63 known elements into the first recognizable periodic table in 1869 based on periodic trends in their properties. Moseley's work on X-ray spectra led to the modern periodic table being arranged by atomic number instead of atomic mass. The periodic table is now understood to result from the periodic repetition of electronic structures as electrons fill different atomic orbitals in shells.
CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
periodic table, modern periodic law, nomenclature of elements greater than 100,electronic configuration and types of elements,periodic trends in properties of elements.ionization enthalpy, effective nuclear charge, electronegativity, s, p d and f block elements, covalent radius, ionic radius, predicition of group, period and block, electron gain enthalpy, periodic trends and chemical reactivity
The periodic table
The periodic table arranges the chemical elements in order of atomic number so that elements with similar properties fall into columns known as groups. The standard periodic table includes periods (horizontal rows) and groups (vertical columns), with elements in the same group having similar properties. Dmitri Mendeleev is credited with developing the first recognizable periodic table in 1869, arranging the known elements based on their atomic masses and properties. While earlier scientists like Lavoisier and Döbereiner identified patterns among elements, Mendeleev's periodic table was the first to systematically organize all known elements and also predict properties of undiscovered elements.
Types Of Chemical Bonds- Ionic Bond,Covalent Bonds,Coordinate Bonds, Basic In...
The document discusses different types of chemical bonds formed by atoms to achieve stable inert gas electronic configurations:
1) Ionic bonds occur through complete electron transfer between atoms, making one positively charged and one negatively charged. The ions are then held together by electrostatic attraction.
2) Covalent bonds involve sharing of electrons between atoms of similar electronegativity to attain stable configurations.
3) Coordinate bonds are a type of covalent bond where both shared electrons are donated by one atom to an acceptor atom in need of electrons.
What's hot (20)
Periodic calssification of elements ncert shashikumar b s
Periodic calssification of elements ncert shashikumar b s
Class 11 chapter 3 Cassification of elements and periodicity in properties ppt
Class 11 chapter 3 Cassification of elements and periodicity in properties ppt
Chemistry(class11)-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
Chemistry(class11)-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
Types Of Chemical Bonds- Ionic Bond,Covalent Bonds,Coordinate Bonds, Basic In...
Types Of Chemical Bonds- Ionic Bond,Covalent Bonds,Coordinate Bonds, Basic In...
Similar to Classification of elements
Chapter 14 d and f block elements
This document discusses the key concepts from Chapter 14 of the chemistry textbook. It covers d-block and f-block elements in the periodic table, including their electronic structures, properties, and important reactions. The chapter is divided into several sections, including an introduction to periodic table, transition elements, general features of transition elements, coordination compounds, and the chemistry of some important transition elements such as vanadium, chromium, manganese, iron and copper.
Chemistry of elements
This document discusses the properties of transition elements, specifically the first transition series elements from Scandium to Zinc. It provides information on their electronic configuration, atomic and ionic radii, ionization potential, and oxidation states. The key points are:
1) The first transition series elements belong to the 3d series, with their last electron entering the 3d subshell. Their general electronic configuration is [Ar] 4s1-2, 3d1-10.
2) Their atomic and ionic radii depend on nuclear charge, number of shells, and screening effect.
3) Ionization potential also depends on these three factors and represents the minimum energy required to remove an electron.
d-block-elements.pptx.pdf
The document discusses d-block elements and transition elements. It provides definitions and explanations around these topics.
1) d-block elements are those in the periodic table between groups 3 to 12, where the last electron enters the d subshell. Not all d-block elements are transition elements.
2) Transition elements are defined as those with incompletely filled d orbitals. Zn, Cd and Hg are not considered transition elements as they have fully filled d orbitals.
3) d-block elements and transition elements show various physical and chemical properties due to their electron configuration, including colored ions, catalytic activity, and ability to form complexes and interstitial compounds.
Periodic table - periodic properties
Periodic table and periodic properties discusses the development and features of the periodic table. It describes how early scientists like Dobereiner, Newlands, and Mendeleev organized elements and recognized periodic trends before the modern periodic table. The document then outlines the structure and classifications of the modern periodic table, including periods, groups, blocks, and representative and transition metals. It also explains important periodic properties such as atomic and ionic radii, ionization energy, and effective nuclear charge and how they vary predictably across the table.
Chapter 8-d-f-block-elements
The document summarizes key points about d-block and f-block elements. It discusses the electronic configuration of transition metals and inner transition elements. It also provides information about the preparation of potassium dichromate and potassium permanganate. Some questions and answers related to the properties of transition metals and inner transition elements are also included.
D f-block chemistry-12
Transition elements have several key characteristics:
(1) They exhibit variable oxidation states unlike s-block and p-block elements.
(2) Many of their compounds are colored due to electron transitions between d-orbital energy levels.
(3) They have a great tendency to form complex compounds due to their small, highly charged ions and vacant low energy d-orbitals.
Periodic Table and its Properties
The document is an outline for a chemistry lesson on the different blocks of elements: s-block, p-block, d-block, and f-block. It includes sections on the electronic configuration and properties of elements in each block. The s-block contains alkali and alkaline earth metals. The p-block contains elements from groups 13 through 18 that can be metals, non-metals, or metalloids. The d-block contains transition metals from groups 3 through 12 that form colored ions and act as catalysts. The f-block contains inner transition metals that also form colored ions and complexes, act as catalysts, and have variable oxidation states.
Ch02 atomic structbonding-fall2016-sent
- The document discusses various topics related to bonding and properties in materials, including the different types of bonds (ionic, covalent, metallic), properties inferred from bonding (melting temperature, elastic modulus), and factors that influence bonding properties (bond energy, interatomic distance).
- The main types of bonds are ionic formed between ions, covalent formed by shared electrons between atoms, and metallic bonding arising from a sea of delocalized electrons. Bond type influences properties like melting temperature and elastic modulus.
- Properties like melting temperature and elastic modulus depend on bonding energy and interatomic distance - higher bond energy and shorter distances result in higher melting temperatures and elastic modulus.
CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
The document discusses the classification of elements and the development of the periodic table over time. It describes early attempts at classification by Dobereiner, Newlands, and Mendeleev. Mendeleev organized the elements into the first periodic table based on increasing atomic mass. Later, Moseley established the modern periodic table based on increasing atomic number. The document outlines the structural features and characteristics of the main blocks (s, p, d, f) of the periodic table. It also defines atomic properties like atomic radius, covalent radius, and metallic radius, and how they vary within the periodic table.
d and f block elements.pptx
The document discusses d-block and f-block elements. It provides information on:
1. The d-block elements have incompletely filled d orbitals and include elements from groups 3 to 12 in the periodic table.
2. Transition metals show variable oxidation states due to their ability to gain or lose ns and (n-1)d electrons. They form colored compounds and complexes due to their unpaired d electrons.
3. The f-block elements have incompletely filled 4f and 5f orbitals and include the lanthanides and actinides which follow lanthanum and actinium respectively.
Spdf block
The document discusses the classification and properties of elements according to their electronic configurations. It describes the four blocks of elements - s-block, p-block, d-block, and f-block. S-block elements have their outermost electrons in the s orbital and include Groups 1 and 2 metals. P-block elements have their outermost electrons in p orbitals and include Groups 13-18. D-block elements have electrons in d orbitals and are also known as transition metals. F-block elements have electrons in f orbitals. Transition metals are defined as elements that form stable ions with partially filled d orbitals. Their key properties include variable oxidation states, colored compounds, ability to form complexes, role as catalyst
d and f block elements ppt 2021-22 (1).pptx
The document discusses the d-block and f-block elements of the periodic table. It provides details about:
1) The d-block contains elements where the d orbitals are progressively filled in each period, while the f-block contains elements where the 4f and 5f orbitals are filled.
2) Transition metals are defined as metals that have incomplete d subshells, while zinc, cadmium, and mercury are not considered transition metals as they have full d10 configurations.
3) The f-block elements are called inner transition or lanthanide elements, with electronic configurations of [Xe] 4f1-14 5d0,1 6s2.
1.4 -Periodicity AS chemistry aqa
The periodic table arranges elements in order of increasing atomic number. Elements are placed in blocks based on their outer electron configurations (s, p, d, f). Elements in the same group have similar properties due to their outer shell electrons. Properties trend periodically across periods and groups due to changing nuclear charge and electron shielding. Metals generally have high melting points due to delocalized electrons, while nonmetals have covalent or weak van der Waals bonding and lower melting points. Ionization energy increases down groups and across periods as it is harder to remove electrons.
XII d & f block elements Notes.pptx
The document discusses the properties of d-block elements or transition elements. It describes their position in the periodic table, electronic configuration, and trends in various properties across the transition series. The key points are:
1) Transition elements have partially filled d orbitals and lie between the electropositive s-block and electronegative p-block elements in the periodic table.
2) Their electronic configurations follow the pattern [n-1]d1-10ns1-2 and there are three series of transition elements based on the d orbital - d-block, d-block and f-block.
3) Transition elements show variable oxidation states, high melting points, form colored compounds and alloys
Transition element
All about transition element , why it is called so, trends, colour and its various properties of D-block element.
Classification of elements and periodicity in properties class 11th chapter 3...
The document discusses the classification of elements and periodic trends in properties according to the periodic table. It summarizes Mendeleev's periodic law and how he arranged elements in a table based on increasing atomic weight and similar properties in vertical columns. It discusses modern revisions to the periodic table based on atomic number. The document then explains trends in various physical and chemical properties across the periodic table, including atomic radius, ionization energy, electronegativity, and oxidation states. It discusses how properties vary periodically based on an element's position in the s, p, d, and f blocks of the periodic table.
Transition Elements
This document discusses transition series elements and their properties. It describes how transition elements have electrons that enter the (n-1)d orbitals, giving them variable oxidation states up to +8. Their atomic radii decrease across periods but increase down groups. Transition metals can conduct heat and electricity well and can be alloyed to improve strength. Some have magnetic properties depending on unpaired electrons. Their colored complexes are due to electron transitions between d orbitals. Common applications include stainless steel, bronze, and uses of copper and nickel in coins, batteries, and turbines.
IB Chemistry on Properties of Transition Metal and Magnetism
This document provides a tutorial on the properties of transition metals and magnetism. It discusses the periodic table and how elements are divided into s, p, d and f blocks. It focuses on d-block elements which have partially filled d orbitals. Transition metals have variable oxidation states due to their partially filled d orbitals. They can form colored complexes with ligands. Their atomic properties like ionization energy and atomic size increase slowly across a period. Transition metals can be paramagnetic or diamagnetic depending on whether their d orbitals have paired or unpaired electrons. Some transition metals like iron, cobalt and nickel are ferromagnetic.
D and F Block Elements Notes for JEE Main 2014
Transition elements are elements whose atoms have incomplete d sub-shells or whose ions have incompletely filled d orbitals. They lie between the highly electropositive s-block elements and highly electronegative p-block elements in the periodic table. While all transition elements are d-block elements, not all d-block elements are transition elements as some like zinc, cadmium, and mercury have completely filled d orbitals. Transition elements are divided into four series based on their electronic configurations.
Similar to Classification of elements (20)
CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
Classification of elements and periodicity in properties class 11th chapter 3...
Classification of elements and periodicity in properties class 11th chapter 3...
IB Chemistry on Properties of Transition Metal and Magnetism
IB Chemistry on Properties of Transition Metal and Magnetism
More from MAYURI SOMPURA
Aromatic electrophilic substitution reactions
types of organic reaction ,structure of benzene ,electronic structure of benzene ,benzene as a source of electrons ,electrophilic substitution reactions ,aromatic substitution reactions ,electrophilic aromatic substitution reactions ,mechanism of electrophilic substitution reactions
Synthetic drugs 3
synthetic drugs ,preparation and uses of phenacetin ,preparation and uses of chloamine t
Synthetic drugs part 2
ynthetic drugs ,preparation of paracetamol ,uses of paracetamol ,p-acetamol ,synthesis of pas ,para amino salicylic acid-pas ,use of para amino salicylic acid ,antipyrine ,uses and sunthesis of antipyrine
Second order reaction
hemical kinetics ,order of reaction ,rate of reaction ,second order reaction ,rate of second order reaction ,derivation of k2 ,k2 ,integration of rate expression
Biological fixation of nitrogen
biological function of nitrogen ,chemical conversion of nitrogen ,biological fixation of nitrogen ,reductase ,nitrogenase
Reduced gas equation cech-202
reduced gas equation ,law of corresponding states ,reduced temperature ,reduced pressure ,reduced volume
Biological functions and toxicity of elements converted
biological function and toxicity of elements ,trace elements ,macro elements ,micro elements ,copper ,leadership ,biological function and toxicity of zinc ,biological function and toxicity of copperchromium ,iodine ,chemistry of iron ,zinc ,radioactive elements biological function
Relationship between vanderwaals equation and critical state converted
relationship between vanderwaals equation ,vanderwaal equation and critical state ,vanderwaal equation ,critical state ,ideal gas equation ,critical state of carbon dioxide
Inhibition and poisoning of enzymes
Enzymes can be inhibited or poisoned by ligands binding to the active site or metal ion prosthetic groups. The addition of azide ions to the enzyme carbonic anhydrase inhibits its activity by binding more strongly to the zinc ion than the native water ligand. Heavy metal ions can also poison enzymes by replacing native metal ions or forming stable complexes with sulfur amino acids, altering the enzyme's confirmation and deactivating it. Thioneins protect against heavy metal poisoning by binding strongly to the metals through their sulfur groups.
Colloidal state elctrokinetic properties- B.Sc. semester-4
colloidal state olloidal state ,electrophoresis ,u-tube for electrophoresis ,electro- osmosis ,osmosis ,electrophoreic mobility
Role of hemoglobin and myoglobin in biological systems
role of hemoglobin and myoglobin in biological sys ,heamoglobin ,myoglobin ,oxygen carrier ,oxygen storage ,oxygenation ,hill constant ,binding constant of myoglobin
Metallo enzymes- B.Sc semester-6
metallo enzymes- b.sc semester-6 ,epoenzymes ,coenzymes ,substrate ,carbonic anhydrase ,carboxy peptidase
Liquefaction of gases - B.Sc semester-2
Gases can be liquefied by increasing pressure or decreasing temperature. Some gases like ammonia and carbon dioxide have high critical temperatures, so applying pressure is sufficient to liquefy them. However, gases like hydrogen and helium have very low critical temperatures, so they require cooling below their critical point first before compressing. There are two main methods to cool gases below their critical temperature - the Joule-Thomson effect and adiabatic expansion. The Joule-Thomson effect involves gases cooling when expanding into a region of lower pressure. Adiabatic expansion uses the principle that gases cool when expanding against pressure by doing external work.
Liquefaction of gases part-2 B.Sc sem-2
liquefaction of gasesiquefaction of gases ,adiabatic expansion ,mechanical work ,demagnetization of paramagnetic substance ,adiabatic demagnetization
Heat of combustion & bayers theory sem 5
organic chemistery ,heat of combustion ,bayers strain theory ,bayers strain theory for cyclobutane ,bayers strain theory for cyclopenatne ,ring size ,energy ,stability ,application of bomb calorimeter ,torsional strain ,angular strain
Carbohydrates sem 3 bsc
- Carbohydrates are the most abundant organic compounds and are essential for life. They include sugars, starches, and cellulose.
- Carbohydrates are classified as monosaccharides, oligosaccharides, or polysaccharides depending on whether they hydrolyze into one, few, or many simple sugars.
- Common tests include oxidation, which can indicate the presence of an aldehyde or ketone group, and reduction, which produces related sugar alcohols and provides evidence of molecular structure.
Alkaloids CHEMISTRY SLIDESHARE
ALKALOIDS alkaloids ,introduction ,alkaloids introduction ,characteristics of alkaoids ,health effects of alkaloids ,functions of alkaloids ,importance of alkaloids ,pharmacological activity of alkaloids ,classification of alkaloids ,chemical alkaloids
Coniine structure elucidation SLIDESHARE sem 5 bsc
structure of coniine ,properties of coniine ,preparation of coniine ,constitution of coniine ,bergmann method for preparation of coniine ,bergmann method for synthesis of coniine ,ladenberg method for synthesis of coniine ,chemistry of coniine
Photochemistry sem 5 509
Photochemistry CECH-509 discusses photochemical reactions and the laws that govern them. Photochemical reactions are chemical reactions initiated by the absorption of light. Key points:
- Photochemical reactions increase free energy while thermal reactions decrease it. The rate of a photochemical reaction depends on the intensity of absorbed light.
- Stark-Einstein law states that each reacting molecule absorbs a single photon, gaining energy to activate and enter the reaction.
- Quantum yield refers to the number of molecules reacted or formed per absorbed photon, indicating the reaction's efficiency. Values below 1 indicate a low yield while above 1 is high. Secondary reactions can result in yields above 1.
More from MAYURI SOMPURA (20)
Biological functions and toxicity of elements converted
Biological functions and toxicity of elements converted
Relationship between vanderwaals equation and critical state converted
Relationship between vanderwaals equation and critical state converted
Colloidal state elctrokinetic properties- B.Sc. semester-4
Colloidal state elctrokinetic properties- B.Sc. semester-4
Role of hemoglobin and myoglobin in biological systems
Role of hemoglobin and myoglobin in biological systems
Coniine structure elucidation SLIDESHARE sem 5 bsc
Coniine structure elucidation SLIDESHARE sem 5 bsc
Recently uploaded
Beyond Degrees - Empowering the Workforce in the Context of Skills-First.pptx
Iván Bornacelly, Policy Analyst at the OECD Centre for Skills, OECD, presents at the webinar 'Tackling job market gaps with a skills-first approach' on 12 June 2024
How to deliver Powerpoint Presentations.pptx
"How to make and deliver dynamic presentations by making it more interactive to captivate your audience attention"
Chapter wise All Notes of First year Basic Civil Engineering.pptx
Chapter wise All Notes of First year Basic Civil Engineering
Syllabus
Chapter-1
Introduction to objective, scope and outcome the subject
Chapter 2
Introduction: Scope and Specialization of Civil Engineering, Role of civil Engineer in Society, Impact of infrastructural development on economy of country.
Chapter 3
Surveying: Object Principles & Types of Surveying; Site Plans, Plans & Maps; Scales & Unit of different Measurements.
Linear Measurements: Instruments used. Linear Measurement by Tape, Ranging out Survey Lines and overcoming Obstructions; Measurements on sloping ground; Tape corrections, conventional symbols. Angular Measurements: Instruments used; Introduction to Compass Surveying, Bearings and Longitude & Latitude of a Line, Introduction to total station.
Levelling: Instrument used Object of levelling, Methods of levelling in brief, and Contour maps.
Chapter 4
Buildings: Selection of site for Buildings, Layout of Building Plan, Types of buildings, Plinth area, carpet area, floor space index, Introduction to building byelaws, concept of sun light & ventilation. Components of Buildings & their functions, Basic concept of R.C.C., Introduction to types of foundation
Chapter 5
Transportation: Introduction to Transportation Engineering; Traffic and Road Safety: Types and Characteristics of Various Modes of Transportation; Various Road Traffic Signs, Causes of Accidents and Road Safety Measures.
Chapter 6
Environmental Engineering: Environmental Pollution, Environmental Acts and Regulations, Functional Concepts of Ecology, Basics of Species, Biodiversity, Ecosystem, Hydrological Cycle; Chemical Cycles: Carbon, Nitrogen & Phosphorus; Energy Flow in Ecosystems.
Water Pollution: Water Quality standards, Introduction to Treatment & Disposal of Waste Water. Reuse and Saving of Water, Rain Water Harvesting. Solid Waste Management: Classification of Solid Waste, Collection, Transportation and Disposal of Solid. Recycling of Solid Waste: Energy Recovery, Sanitary Landfill, On-Site Sanitation. Air & Noise Pollution: Primary and Secondary air pollutants, Harmful effects of Air Pollution, Control of Air Pollution. . Noise Pollution Harmful Effects of noise pollution, control of noise pollution, Global warming & Climate Change, Ozone depletion, Greenhouse effect
Text Books:
1. Palancharmy, Basic Civil Engineering, McGraw Hill publishers.
2. Satheesh Gopi, Basic Civil Engineering, Pearson Publishers.
3. Ketki Rangwala Dalal, Essentials of Civil Engineering, Charotar Publishing House.
4. BCP, Surveying volume 1
Elevate Your Nonprofit's Online Presence_ A Guide to Effective SEO Strategies...
Whether you're new to SEO or looking to refine your existing strategies, this webinar will provide you with actionable insights and practical tips to elevate your nonprofit's online presence.
مصحف القراءات العشر أعد أحرف الخلاف سمير بسيوني.pdf
مصحف أحرف الخلاف للقراء العشرةأعد أحرف الخلاف بالتلوين وصلا سمير بسيوني غفر الله له
HYPERTENSION - SLIDE SHARE PRESENTATION.
IT WILL BE HELPFULL FOR THE NUSING STUDENTS
IT FOCUSED ON MEDICAL MANAGEMENT AND NURSING MANAGEMENT.
HIGHLIGHTS ON HEALTH EDUCATION.
Leveraging Generative AI to Drive Nonprofit Innovation
In this webinar, participants learned how to utilize Generative AI to streamline operations and elevate member engagement. Amazon Web Service experts provided a customer specific use cases and dived into low/no-code tools that are quick and easy to deploy through Amazon Web Service (AWS.)
Gender and Mental Health - Counselling and Family Therapy Applications and In...
A proprietary approach developed by bringing together the best of learning theories from Psychology, design principles from the world of visualization, and pedagogical methods from over a decade of training experience, that enables you to: Learn better, faster!
Recently uploaded (20)
Beyond Degrees - Empowering the Workforce in the Context of Skills-First.pptx
Beyond Degrees - Empowering the Workforce in the Context of Skills-First.pptx
Chapter wise All Notes of First year Basic Civil Engineering.pptx
Chapter wise All Notes of First year Basic Civil Engineering.pptx
Elevate Your Nonprofit's Online Presence_ A Guide to Effective SEO Strategies...
Elevate Your Nonprofit's Online Presence_ A Guide to Effective SEO Strategies...
REASIGNACION 2024 UGEL CHUPACA 2024 UGEL CHUPACA.pdf
REASIGNACION 2024 UGEL CHUPACA 2024 UGEL CHUPACA.pdf
مصحف القراءات العشر أعد أحرف الخلاف سمير بسيوني.pdf
مصحف القراءات العشر أعد أحرف الخلاف سمير بسيوني.pdf
Juneteenth Freedom Day 2024 David Douglas School District
Juneteenth Freedom Day 2024 David Douglas School District
NEWSPAPERS - QUESTION 1 - REVISION POWERPOINT.pptx
NEWSPAPERS - QUESTION 1 - REVISION POWERPOINT.pptx
Leveraging Generative AI to Drive Nonprofit Innovation
Leveraging Generative AI to Drive Nonprofit Innovation
Gender and Mental Health - Counselling and Family Therapy Applications and In...
Gender and Mental Health - Counselling and Family Therapy Applications and In...
Classification of elements
- 1. CLASSIFICATION OF ELEMENTS STD- 11 SCI (E) CHEMISTRY - CH-3 BY :-MS. MAYURI R SOMPURA HJD INSTITUE KERA-KUTCH
- 2. INTRODUCTION • THE ELEMENTS ARE CLASSIFIED DEPENDING ON THE TYPE OF ORBITALS BEING FILLED WITH ELECTRONS. Elements s - block p - block d - block f - block Elements whose valence electron enters into valence s orbital, they are known as s – block elements Elements whose valence electron enters into valence p orbital, they are known as p – block elements Elements that have (n-1) d orbital not completely filled. Elements that have (n-1) f orbital not completely filled.
- 5. S-BLOCK ELEMENTS Group - 1 Alkali metals e− configuration – ns₁ Group - 2 Alkali earth metals e− configuration – ns₂
- 6. S-BLOCK ELEMENTS • They have low ionization enthalpies. • They lose outermost electrons easily, thus forming 1+ and 2+ ions. • They are highly reactive. • They are never found in pure state. • They are mostly found in ionic state.. • Exception – Li & Be • Metallic nature increases as we move down the group.
- 7. P – BLOCK ELEMENTS
- 8. • Boron family • ns2np1 Group- 13 • Carbon family • ns2np2 Group- 14 • Nitrogen family (pnicogens) • ns2np3 Group- 15 • Oxygen family (chalcogens) • ns2np4 Group- 16 • Halogens (salt forming) • ns2np5 Group- 17 • Noble gases • ns2np6 Group- 18
- 9. P-BLOCK ELEMENTS • They are known as representative elements / main group elements. • Noble gases (group-18) have completely filled electronic configuration, thus have low chemical reactivity. • Group-17 & 16 elements : a) Highly electronegative b) Have high electron gain enthalpies ( readily add 1-2 e⁻ ) • Non metallic character - ↑ as we go from left → right in period. • Metallic character - ↑ as we go from up → down in group.
- 11. D – BLOCK ELEMENTS
- 12. D-BLOCK ELEMENTS • They are known as transitional elements ( bridge elements). • Transitional elements – bridge between chemically active metals ( s-block) & less active metals ( p- block). • Electronic configuration - (n-1)d1-10ns0-2 • They are all metals having coloured ions. • They have variable valancies ( oxidation states ). • They have magnetic properties – paramangnetic in nature. • They are used as catalysts. • Zn, Cd, Hg - - (n-1)d10ns2 - pseudo transitional elements. ⁕ns – ultimate valance orbital ⁕nd – penultimate valance orbital
- 14. F – BLOCK ELEMENTS
- 15. F-BLOCK ELEMENTS • They are known as inner transitional elements. • Electronic configuration –(n-2)f1-14 (n-1)d0-1ns0-2 • They are all metals having compleax chemistry. • They are radioactive elements. • Post uranium elements are all radioactive elements. • Their half life is too small. • They are found in nanograms.