This document discusses radicals, ions, and how to write chemical formulas. Radicals are species with unpaired electrons that can exist independently, and there are two main types - acid and basic radicals. Ions are charged species formed when atoms gain or lose electrons to become cations (positively charged) or anions (negatively charged). To write a chemical formula, you need the symbols of the elements and their valencies (combining capacities), then cross-multiply the valencies to get the formula. Examples of common cation and anion symbols and their valencies are provided.
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.
Introduction
Discovery of Sub-atomic Particles
Atomic Models
Developments leading to Bohr’s Model of atom
Bohr’s Model for Hydrogen atom
Quantum Mechanical Model of the atoms
Concept of oxidation and reduction, redox reactions, oxidation number, balancing redox reactions, loss and gain of electrons, Balancing redox reactions, Half reaction method, Types of redox reaction- direct and indirect method, Electrochemical cell, Classification of redox reactions.
Hello! I've created this PowerPoint presentation as a requisite in General Chemistry 1 subject during SY 2019–2020.
Electronic Structure of Atoms
- Quantum Mechanical Description of Atom
- Schrödinger’s Model of Hydrogen Atom and Wave Functions
- Main Energy Levels, Sublevels, and Orbitals
- Quantum Numbers
- Electron Configuration
Should you need a .pptx file, kindly email me at rd.chrxlr@gmail.com.
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.
Introduction
Discovery of Sub-atomic Particles
Atomic Models
Developments leading to Bohr’s Model of atom
Bohr’s Model for Hydrogen atom
Quantum Mechanical Model of the atoms
Concept of oxidation and reduction, redox reactions, oxidation number, balancing redox reactions, loss and gain of electrons, Balancing redox reactions, Half reaction method, Types of redox reaction- direct and indirect method, Electrochemical cell, Classification of redox reactions.
Hello! I've created this PowerPoint presentation as a requisite in General Chemistry 1 subject during SY 2019–2020.
Electronic Structure of Atoms
- Quantum Mechanical Description of Atom
- Schrödinger’s Model of Hydrogen Atom and Wave Functions
- Main Energy Levels, Sublevels, and Orbitals
- Quantum Numbers
- Electron Configuration
Should you need a .pptx file, kindly email me at rd.chrxlr@gmail.com.
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A reaction intermediate or an intermediate is a molecular entity that is formed from the reactants (or preceding intermediates) and reacts further to give the directly observed products of a chemical reaction.
Chemistry is involved with various and diverse interactions of matter either around us or simply inside the laboratory. These are described using the language of chemistry which consists of symbols, formulas and equations.
The Roman Empire A Historical Colossus.pdfkaushalkr1407
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The empire's roots lie in the city of Rome, founded, according to legend, by Romulus in 753 BCE. Over centuries, Rome evolved from a small settlement to a formidable republic, characterized by a complex political system with elected officials and checks on power. However, internal strife, class conflicts, and military ambitions paved the way for the end of the Republic. Julius Caesar’s dictatorship and subsequent assassination in 44 BCE created a power vacuum, leading to a civil war. Octavian, later Augustus, emerged victorious, heralding the Roman Empire’s birth.
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The Roman Empire’s society was hierarchical, with a rigid class system. At the top were the patricians, wealthy elites who held significant political power. Below them were the plebeians, free citizens with limited political influence, and the vast numbers of slaves who formed the backbone of the economy. The family unit was central, governed by the paterfamilias, the male head who held absolute authority.
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Roman architecture and engineering achievements were monumental. They perfected the arch, vault, and dome, constructing enduring structures like the Colosseum, Pantheon, and aqueducts. These engineering marvels not only showcased Roman ingenuity but also served practical purposes, from public entertainment to water supply.
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Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
Acetabularia Information For Class 9 .docxvaibhavrinwa19
Acetabularia acetabulum is a single-celled green alga that in its vegetative state is morphologically differentiated into a basal rhizoid and an axially elongated stalk, which bears whorls of branching hairs. The single diploid nucleus resides in the rhizoid.
The French Revolution, which began in 1789, was a period of radical social and political upheaval in France. It marked the decline of absolute monarchies, the rise of secular and democratic republics, and the eventual rise of Napoleon Bonaparte. This revolutionary period is crucial in understanding the transition from feudalism to modernity in Europe.
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Personal development courses are widely available today, with each one promising life-changing outcomes. Tim Han’s Life Mastery Achievers (LMA) Course has drawn a lot of interest. In addition to offering my frank assessment of Success Insider’s LMA Course, this piece examines the course’s effects via a variety of Tim Han LMA course reviews and Success Insider comments.
Embracing GenAI - A Strategic ImperativePeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
2. Radicals
Ions
How to write a chemical formula
3. Radicals are atomic or molecular species
with unpaired electrons which are capable
of independent existence.
4. Types of Radicals
Acid radicals:-The acid radical is an anion left after
removal of hydrogen atoms from an acid.
Basic radicals:-The basic radical is the cation left
after removal of OH or other alkaline group from
the bases.
5. An ion is a charged species in which an atom or a
group of atoms possess a net electric charge. The
net electric charge of an ion can either be positive
or negative. Positively charged ions are
called cations and negatively charged ions are
called anions.
6. Cations are atoms that have lost an
electron to become positively charged.
The ions of all the metal elements are
cations.
If an atom loses one electron, then the
cation formed has 1 unit positive charge.
Examples:- Na+ , Zn2+, Mg2+, Al3+ etc.
7. Anions are atoms or groups of atoms that
have gained electrons. Having more
negatively charged electrons than positively
charged protons, they are negatively
charged.
Most anions are composed from multiple
atoms, and are called polyatomic ions.
Examples:- Cl− ,O2- , co3
2-, PO4
3- etc.
ANIONS
8. Chemical formula of a compound is the symbolic
representation of its atomic constituents. In other words, a
chemical formula represents the composition of a molecule in
terms of the symbols of the elements present in that molecule.
To write the chemical formula of a compound, one should
have prior knowledge of two things.
1.The symbols of the constituent elements, and
2.The combining capacity of each atom constituting the
compound
9. The combining power or the combining capacity of an atom
or an element is called its valency. The number of atoms of
other elements with which one atom of an element combines is
decided by the valency of that element.
For example, both hydrogen and chlorine have a valency of 1.
Therefore, one atom of hydrogen reacts with one atom of
chlorine to form one molecule of hydrogen chloride.
The valency of an ion is equal to the charge on it.
10. Name of
ion
Symbol Valency Name of
ion
Symbol Valency
Aluminium Al3+ 3 Sulphite SO3
2- 2
Ammonium NH4
+ 1 Bromide Br− 1
Calcium Ca2+ 2 Carbonate CO3
2- 2
Copper(II) Cu2+ 2 Chloride Cl− 1
Hydrogen H+ 1 Hydride H− 1
Iron(III) Fe3+ 3 Hydroxide OH− 1
Potassium K+ 1 Oxide O2− 2
Zinc Zn2+ 2 Sulphide S2− 2
11. 1.Write the symbols of the elements which form a
compound.
If we have to write the formula of hydrogen
sulphide. First write down the symbols of
hydrogen and sulphur.
Symbols: H S
12. 2. Below the symbol of each element, write down its
valency.
Symbols: H S
Valencies: 1 2
13. 3.Finally cross-over the valencies of the
combining atoms. This will give the required
formula.
Symbols: H S
Valencies: 1 2
14. Formula of some compounds
Chemical compounds Chemical Formula
Silver chloride AgCl
Aluminium nitrate Al(NO3)3
Barium chloride BaCl2
Calcium carbonate CaCO3
Potassium nitrate KNO3
Magnesium aluminate Mg(AlO2)2
Sodium carbonate Na2CO3