ATOMIC MODELS.ppt
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The document summarizes the development of atomic models over time from Dalton's model to the modern model. It discusses Dalton's model which proposed that atoms are indestructible particles. It then discusses Thomson's "plum pudding" model which viewed the atom as a sphere of positive charge with electrons embedded in it. Rutherford's model incorporated evidence that the atom has a small, dense nucleus based on alpha particle scattering experiments. Bohr's model improved on this by proposing that electrons orbit the nucleus in fixed energy shells. The modern model incorporates quantum mechanics and views the atom as a nucleus surrounded by electron probability clouds.
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Atomic Theory Reg
1. Early atomic models proposed by philosophers like Democritus and Dalton proposed that atoms were the fundamental indivisible units of matter.
2. Rutherford's gold foil experiment in the early 1900s showed that the atom has a small, dense nucleus at its center containing positive charge.
3. Later models like Bohr's incorporated the idea that electrons orbit the nucleus in fixed energy levels, accounting for the emission and absorption of photons.
A T O M I C T H E O R Y Reg
1. Early atomic models proposed by philosophers like Democritus and Dalton proposed that atoms were the fundamental building blocks of matter.
2. Rutherford's gold foil experiment in the early 1900s showed that the atom has a small, dense nucleus at its center containing most of its mass.
3. Later discoveries found that the nucleus contains protons and neutrons, while electrons orbit the nucleus, leading to the modern understanding of atomic structure.
Strutcure of an atom
Structure of-an atom for class 9th science.
it will be very useful to project and studies
there will be animations
if you download you can see it
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.
Atom models
This document discusses four major atomic models:
- Dalton's atomic theory from 1807 which proposed atoms of the same element are identical and atoms can combine to form new substances.
- Thomson's "plum pudding" model from 1904 which viewed the atom as a positively charged sphere with electrons embedded within it.
- Rutherford's 1909 "planetary model" based on his gold foil experiment, showing the atom consists of a small, dense nucleus surrounded by empty space with electrons orbiting the nucleus.
- Bohr's 1913 model which introduced the concept of distinct electron orbits or shells around the nucleus to explain atomic spectra. This model is closest to how atoms are currently understood.
Understanding the atom
The document provides an overview of atomic structure and models of the atom over time. It discusses:
1) Early atomic models including Thomson's model of a positively charged sphere with electrons inside and Rutherford's discovery of the nucleus at the atom's center.
2) Modern atomic structure with a dense nucleus surrounded by an electron cloud, and that protons and neutrons are made of quarks.
3) Differences between atoms including atomic number, isotopes having different neutron numbers, and ions forming when atoms gain or lose electrons.
the building block ATOMS
this ppt is all about basic working of most basic unit atom. and could enrich your knowledge about atom. and follow me at my instagram
https://www.instagram.com/shantanu_stark/?hl=en
atomic-models.ppt
Atoms are the basic unit of matter and are composed of subatomic particles - protons, neutrons and electrons. Protons and neutrons are found in the nucleus, which determines the atom's mass. Electrons orbit the nucleus. An atom is neutral if it has an equal number of protons and electrons. Several models have been proposed to describe the atomic structure, from Dalton's solid sphere model to Rutherford's nuclear model to Bohr's shells model. Modern atomic theory is based on wave mechanics and electrons are described as probability distributions rather than definite orbits.
Recommended
Atomic Theory Reg
1. Early atomic models proposed by philosophers like Democritus and Dalton proposed that atoms were the fundamental indivisible units of matter.
2. Rutherford's gold foil experiment in the early 1900s showed that the atom has a small, dense nucleus at its center containing positive charge.
3. Later models like Bohr's incorporated the idea that electrons orbit the nucleus in fixed energy levels, accounting for the emission and absorption of photons.
A T O M I C T H E O R Y Reg
1. Early atomic models proposed by philosophers like Democritus and Dalton proposed that atoms were the fundamental building blocks of matter.
2. Rutherford's gold foil experiment in the early 1900s showed that the atom has a small, dense nucleus at its center containing most of its mass.
3. Later discoveries found that the nucleus contains protons and neutrons, while electrons orbit the nucleus, leading to the modern understanding of atomic structure.
Strutcure of an atom
Structure of-an atom for class 9th science.
it will be very useful to project and studies
there will be animations
if you download you can see it
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.
Atom models
This document discusses four major atomic models:
- Dalton's atomic theory from 1807 which proposed atoms of the same element are identical and atoms can combine to form new substances.
- Thomson's "plum pudding" model from 1904 which viewed the atom as a positively charged sphere with electrons embedded within it.
- Rutherford's 1909 "planetary model" based on his gold foil experiment, showing the atom consists of a small, dense nucleus surrounded by empty space with electrons orbiting the nucleus.
- Bohr's 1913 model which introduced the concept of distinct electron orbits or shells around the nucleus to explain atomic spectra. This model is closest to how atoms are currently understood.
Understanding the atom
The document provides an overview of atomic structure and models of the atom over time. It discusses:
1) Early atomic models including Thomson's model of a positively charged sphere with electrons inside and Rutherford's discovery of the nucleus at the atom's center.
2) Modern atomic structure with a dense nucleus surrounded by an electron cloud, and that protons and neutrons are made of quarks.
3) Differences between atoms including atomic number, isotopes having different neutron numbers, and ions forming when atoms gain or lose electrons.
the building block ATOMS
this ppt is all about basic working of most basic unit atom. and could enrich your knowledge about atom. and follow me at my instagram
https://www.instagram.com/shantanu_stark/?hl=en
atomic-models.ppt
Atoms are the basic unit of matter and are composed of subatomic particles - protons, neutrons and electrons. Protons and neutrons are found in the nucleus, which determines the atom's mass. Electrons orbit the nucleus. An atom is neutral if it has an equal number of protons and electrons. Several models have been proposed to describe the atomic structure, from Dalton's solid sphere model to Rutherford's nuclear model to Bohr's shells model. Modern atomic theory is based on wave mechanics and electrons are described as probability distributions rather than definite orbits.
Structure Of Atom[1] Monika Khurana
The document discusses the history and development of atomic models from Dalton to Bohr. It describes John Dalton's atomic theory, J.J. Thomson's plum pudding model of the atom, Rutherford's gold foil experiment which discovered the nucleus, and Niels Bohr's model of electrons in fixed orbits around the nucleus. The key components of an atom - electrons, protons, and neutrons - are identified along with their properties.
Chemunit3presentation 111002170039-phpapp01
The document discusses the history of atomic theory from ancient Greek philosophers to modern atomic structure. It begins with Democritus proposing atoms in 460 BC, though Aristotle disagreed. In the early 1800s, John Dalton revived atomic theory and proposed atoms combine in whole number ratios, explaining conservation of mass. In the early 1900s, J.J. Thomson, Ernest Rutherford, and Niels Bohr contributed atomic models. Atoms are made of electrons, protons, and neutrons. Isotopes have the same number of protons but different neutrons. Unstable nuclei undergo radioactive decay through alpha, beta, or gamma radiation.
SCIENCE PRESENTATION
The document summarizes the development of atomic theory over time. It describes the early ideas of Democritus and Dalton's contributions, including defining atoms and the key points of his atomic theory. Later discoveries included the electron by Thomson, the nuclear model from Rutherford's gold foil experiment, discovery of the proton, neutron discovered by Chadwick, and development of quantum mechanics to better explain atomic structure.
Atomic theory presentation finale
The document discusses the history and development of atomic theory from ancient Greek philosophers like Democritus and Leucippus, who first proposed the idea of indivisible particles called atoms, to modern scientists like Dalton, Thomson, Rutherford, and Bohr who contributed key discoveries and models that led to our current understanding. It explains concepts like atoms, elements, atomic number, mass, ions, and different atomic models including the plum pudding, Bohr, and electron cloud models.
Atomic theory presentation finale
The document discusses the history and development of atomic theory from ancient Greek philosophers like Democritus and Leucippus, who first proposed the idea of indivisible particles called atoms, to modern scientists like Dalton, Thomson, Rutherford, and Bohr who contributed key discoveries and models that led to our current understanding. It explains concepts like atoms, elements, isotopes, atomic number, atomic mass, ions, and different atomic models including the plum pudding model, Bohr model, and electron cloud model.
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The document discusses atomic models and nuclear physics. It provides information on:
1) Early atomic models including Dalton's billiard ball model, Thomson's plum pudding model, Rutherford's nuclear model, and Bohr's planetary model.
2) Experiments that led to discoveries about the structure of the atom including Thomson's cathode ray tube experiment, Rutherford's gold foil experiment, and Bohr's model of electron orbits.
3) Components of the nucleus including protons, neutrons, and isotopes.
4) Types of radiation including alpha, beta, gamma particles and their properties such as mass, charge, penetration and ionization.
5) Experiments that helped discover radiation and nuclear decay processes.
science homework EAP presentation.ppt
The document summarizes three major atomic models:
1. J.J. Thomson's model from 1898 viewed the atom as a uniform positive sphere with electrons embedded inside.
2. Rutherford's 1911 model resulted from experiments showing most alpha particles passed through a gold foil, but a small fraction bounced back, indicating a small, dense nucleus.
3. Niels Bohr's 1913 model incorporated Planck's quantum theory, proposing electrons orbit in discrete energy levels and do not radiate while in the same energy level.
atom and atomic theory chemistryxxxx.ppt
Atoms are the fundamental units that make up elements. John Dalton proposed the atomic theory which states that elements are made of atoms and atoms of the same element are identical. Atoms are made up of a nucleus containing protons and neutrons, surrounded by electrons. The discovery of the electron, proton, neutron, and development of quantum theory led to modern atomic structure and periodic table. The periodic table organizes elements based on atomic structure including atomic number and trends in properties.
CBSE Class 9 Science Chapter 4- structure of atom
This document discusses the structure of atoms and the development of atomic models over time. It covers John Dalton's early atomic theory that atoms are indivisible and different for each element. J.J. Thomson's plum pudding model described atoms as electrically neutral spheres. Rutherford determined atoms have a small, dense nucleus through alpha particle scattering experiments. Niels Bohr incorporated quantum theory, proposing electrons orbit in discrete energy levels. The document also discusses atomic number, mass number, isotopes, electron configuration, and valency.
Structure of an atom
The document summarizes different models of the atom. It describes the key particles that make up an atom - electrons, protons, and neutrons. It then discusses several historical models including Thomson's model which depicted the atom as a positively charged sphere with electrons embedded in it, Rutherford's model which established the nucleus at the center, and Bohr's model which proposed electrons orbit in defined shells. The document also outlines the distribution of electrons in the different atomic shells.
Structure Of The Atom.pdf notes important
The document provides information on the structure of atoms, including key experiments and models that helped reveal the internal structure of atoms. It discusses J.J. Thomson's cathode ray experiment that discovered electrons, Rutherford's alpha particle scattering experiment that showed atoms have a small, dense nucleus, and Bohr's model of electron orbits around the nucleus. It also covers topics like isotopes, mass number, atomic number, electron configuration, and valency.
Atoms
1. The document discusses the historical development of atomic theory from Democritus' idea of indivisible atoms to the modern atomic model.
2. Key contributors included Dalton who proposed atoms of different elements have different properties, Thomson who discovered the electron, and Rutherford whose gold foil experiment showed the atom has a small, dense nucleus.
3. The modern atomic model consists of a small, positively charged nucleus surrounded by electrons in energy levels or an electron cloud. Atoms of the same element can have different numbers of neutrons, known as isotopes.
Chapter 3 - Atoms
1. The document discusses the historical development of atomic theory from Democritus' idea of indivisible atoms to the modern atomic model.
2. Key contributors included Dalton who proposed atoms of different elements have different properties, Thomson who discovered the electron, and Rutherford whose gold foil experiment showed the atom's small, dense nucleus.
3. The modern atomic model consists of a small, positively charged nucleus surrounded by electrons in regions of probable location called electron clouds.
structure of an atom by romit jain
The document summarizes the development of atomic models over time. Early models included Thomson's "plum pudding" model which viewed the atom as electrons embedded in a uniform positive charge. Rutherford's gold foil experiment showed atoms have a small, dense nucleus and led to the nuclear model. Bohr incorporated quantized electron orbits to explain the stability of atoms. Later, Chadwick discovered the neutron, completing the standard model of the atom consisting of electrons orbiting a nucleus of protons and neutrons.
FINAL POWERPOINT PRESENTATION
1. Democritus was the first to propose that all matter is composed of tiny indivisible units called atoms. Later scientists like Dalton expanded on this idea.
2. Rutherford's gold foil experiment showed that atoms have a small, dense nucleus containing protons and neutrons, with electrons orbiting the nucleus. This overturned the plum pudding model.
3. Chadwick discovered the neutron in 1932, completing the standard picture of atomic structure with protons and neutrons in the nucleus and electrons in orbitals around it.
Pit quantum physics atega
- Dalton's, Thomson's, Rutherford's and Bohr's atomic models each proposed new understandings of atomic structure but had limitations. Dalton's model did not account for subatomic particles. Thomson's model could not explain atomic stability. Rutherford's model could not explain atomic stability and Bohr's model violated the Heisenberg uncertainty principle. The quantum atomic model of electrons in probabilistic electron clouds addressed many of the limitations of earlier atomic models.
Structure of the Atom.pptx.pdf
The document discusses the structure of atoms. It describes how early scientists like Dalton, Thomson, Rutherford, and Bohr contributed to developing models of the atom through experiments. Thomson's "plum pudding" model depicted electrons distributed uniformly in a positively charged sphere, but it could not explain atomic stability. Rutherford's gold foil experiment showed that the positive charge and mass of atoms are concentrated in a tiny nucleus, leading to his nuclear model. Bohr's model incorporated discrete electron orbits to explain atomic stability. The document also discusses subatomic particles like protons, neutrons, isotopes, isobars, and how electrons are arranged in shells according to their quantum numbers.
Atoms:
Matter is made up of atoms, which are the smallest particles that make up matter. Atoms contain protons, neutrons, and electrons. Protons and neutrons are located in the center of the atom, called the nucleus, while electrons orbit around the nucleus. Scientists like Democritus, Dalton, Thompson, Rutherford, and Bohr contributed theories to our modern understanding of atomic structure, such as electrons orbiting the nucleus in specific energy levels.
Atomic Theory Overview
The document summarizes the historical development of atomic structure models from ancient philosophers to modern atomic theory. It describes early continuous models proposed by Aristotle and Democritus' earliest concept of atoms. John Dalton established the foundations of modern atomic theory by proposing atoms as indivisible particles that combine in whole number ratios. J.J. Thomson's experiments led him to propose a "plum pudding" model with electrons embedded in a positive sphere. Rutherford determined atoms have a small, dense positively charged nucleus surrounded by electrons. Modern atomic structure incorporates discoveries by Bohr and Chadwick that atoms consist of a nucleus of protons and neutrons surrounded by electrons in shells.
Chemchapt4 101015131310-phpapp02
- John Dalton developed the first modern atomic theory in the early 1800s based on experiments observing chemical reactions. He proposed that all matter is composed of tiny, indivisible particles called atoms.
- Atoms consist of a small, dense nucleus containing protons and neutrons, surrounded by electrons. The number of protons defines the identity of the atom as a particular chemical element.
- Atoms of the same element can differ in the number of neutrons, forming isotopes. Unstable isotopes decay through emission of radiation like alpha or beta particles to become stable.
Natural birth techniques - Mrs.Akanksha Trivedi Rama University
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Structure Of Atom[1] Monika Khurana
The document discusses the history and development of atomic models from Dalton to Bohr. It describes John Dalton's atomic theory, J.J. Thomson's plum pudding model of the atom, Rutherford's gold foil experiment which discovered the nucleus, and Niels Bohr's model of electrons in fixed orbits around the nucleus. The key components of an atom - electrons, protons, and neutrons - are identified along with their properties.
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The document discusses the history of atomic theory from ancient Greek philosophers to modern atomic structure. It begins with Democritus proposing atoms in 460 BC, though Aristotle disagreed. In the early 1800s, John Dalton revived atomic theory and proposed atoms combine in whole number ratios, explaining conservation of mass. In the early 1900s, J.J. Thomson, Ernest Rutherford, and Niels Bohr contributed atomic models. Atoms are made of electrons, protons, and neutrons. Isotopes have the same number of protons but different neutrons. Unstable nuclei undergo radioactive decay through alpha, beta, or gamma radiation.
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The document summarizes the development of atomic theory over time. It describes the early ideas of Democritus and Dalton's contributions, including defining atoms and the key points of his atomic theory. Later discoveries included the electron by Thomson, the nuclear model from Rutherford's gold foil experiment, discovery of the proton, neutron discovered by Chadwick, and development of quantum mechanics to better explain atomic structure.
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The document discusses the history and development of atomic theory from ancient Greek philosophers like Democritus and Leucippus, who first proposed the idea of indivisible particles called atoms, to modern scientists like Dalton, Thomson, Rutherford, and Bohr who contributed key discoveries and models that led to our current understanding. It explains concepts like atoms, elements, atomic number, mass, ions, and different atomic models including the plum pudding, Bohr, and electron cloud models.
Atomic theory presentation finale
The document discusses the history and development of atomic theory from ancient Greek philosophers like Democritus and Leucippus, who first proposed the idea of indivisible particles called atoms, to modern scientists like Dalton, Thomson, Rutherford, and Bohr who contributed key discoveries and models that led to our current understanding. It explains concepts like atoms, elements, isotopes, atomic number, atomic mass, ions, and different atomic models including the plum pudding model, Bohr model, and electron cloud model.
Particle and Nuclear Physics 1.pdf
The document discusses atomic models and nuclear physics. It provides information on:
1) Early atomic models including Dalton's billiard ball model, Thomson's plum pudding model, Rutherford's nuclear model, and Bohr's planetary model.
2) Experiments that led to discoveries about the structure of the atom including Thomson's cathode ray tube experiment, Rutherford's gold foil experiment, and Bohr's model of electron orbits.
3) Components of the nucleus including protons, neutrons, and isotopes.
4) Types of radiation including alpha, beta, gamma particles and their properties such as mass, charge, penetration and ionization.
5) Experiments that helped discover radiation and nuclear decay processes.
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The document summarizes three major atomic models:
1. J.J. Thomson's model from 1898 viewed the atom as a uniform positive sphere with electrons embedded inside.
2. Rutherford's 1911 model resulted from experiments showing most alpha particles passed through a gold foil, but a small fraction bounced back, indicating a small, dense nucleus.
3. Niels Bohr's 1913 model incorporated Planck's quantum theory, proposing electrons orbit in discrete energy levels and do not radiate while in the same energy level.
atom and atomic theory chemistryxxxx.ppt
Atoms are the fundamental units that make up elements. John Dalton proposed the atomic theory which states that elements are made of atoms and atoms of the same element are identical. Atoms are made up of a nucleus containing protons and neutrons, surrounded by electrons. The discovery of the electron, proton, neutron, and development of quantum theory led to modern atomic structure and periodic table. The periodic table organizes elements based on atomic structure including atomic number and trends in properties.
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This document discusses the structure of atoms and the development of atomic models over time. It covers John Dalton's early atomic theory that atoms are indivisible and different for each element. J.J. Thomson's plum pudding model described atoms as electrically neutral spheres. Rutherford determined atoms have a small, dense nucleus through alpha particle scattering experiments. Niels Bohr incorporated quantum theory, proposing electrons orbit in discrete energy levels. The document also discusses atomic number, mass number, isotopes, electron configuration, and valency.
Structure of an atom
The document summarizes different models of the atom. It describes the key particles that make up an atom - electrons, protons, and neutrons. It then discusses several historical models including Thomson's model which depicted the atom as a positively charged sphere with electrons embedded in it, Rutherford's model which established the nucleus at the center, and Bohr's model which proposed electrons orbit in defined shells. The document also outlines the distribution of electrons in the different atomic shells.
Structure Of The Atom.pdf notes important
The document provides information on the structure of atoms, including key experiments and models that helped reveal the internal structure of atoms. It discusses J.J. Thomson's cathode ray experiment that discovered electrons, Rutherford's alpha particle scattering experiment that showed atoms have a small, dense nucleus, and Bohr's model of electron orbits around the nucleus. It also covers topics like isotopes, mass number, atomic number, electron configuration, and valency.
Atoms
1. The document discusses the historical development of atomic theory from Democritus' idea of indivisible atoms to the modern atomic model.
2. Key contributors included Dalton who proposed atoms of different elements have different properties, Thomson who discovered the electron, and Rutherford whose gold foil experiment showed the atom has a small, dense nucleus.
3. The modern atomic model consists of a small, positively charged nucleus surrounded by electrons in energy levels or an electron cloud. Atoms of the same element can have different numbers of neutrons, known as isotopes.
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1. The document discusses the historical development of atomic theory from Democritus' idea of indivisible atoms to the modern atomic model.
2. Key contributors included Dalton who proposed atoms of different elements have different properties, Thomson who discovered the electron, and Rutherford whose gold foil experiment showed the atom's small, dense nucleus.
3. The modern atomic model consists of a small, positively charged nucleus surrounded by electrons in regions of probable location called electron clouds.
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The document summarizes the development of atomic models over time. Early models included Thomson's "plum pudding" model which viewed the atom as electrons embedded in a uniform positive charge. Rutherford's gold foil experiment showed atoms have a small, dense nucleus and led to the nuclear model. Bohr incorporated quantized electron orbits to explain the stability of atoms. Later, Chadwick discovered the neutron, completing the standard model of the atom consisting of electrons orbiting a nucleus of protons and neutrons.
FINAL POWERPOINT PRESENTATION
1. Democritus was the first to propose that all matter is composed of tiny indivisible units called atoms. Later scientists like Dalton expanded on this idea.
2. Rutherford's gold foil experiment showed that atoms have a small, dense nucleus containing protons and neutrons, with electrons orbiting the nucleus. This overturned the plum pudding model.
3. Chadwick discovered the neutron in 1932, completing the standard picture of atomic structure with protons and neutrons in the nucleus and electrons in orbitals around it.
Pit quantum physics atega
- Dalton's, Thomson's, Rutherford's and Bohr's atomic models each proposed new understandings of atomic structure but had limitations. Dalton's model did not account for subatomic particles. Thomson's model could not explain atomic stability. Rutherford's model could not explain atomic stability and Bohr's model violated the Heisenberg uncertainty principle. The quantum atomic model of electrons in probabilistic electron clouds addressed many of the limitations of earlier atomic models.
Structure of the Atom.pptx.pdf
The document discusses the structure of atoms. It describes how early scientists like Dalton, Thomson, Rutherford, and Bohr contributed to developing models of the atom through experiments. Thomson's "plum pudding" model depicted electrons distributed uniformly in a positively charged sphere, but it could not explain atomic stability. Rutherford's gold foil experiment showed that the positive charge and mass of atoms are concentrated in a tiny nucleus, leading to his nuclear model. Bohr's model incorporated discrete electron orbits to explain atomic stability. The document also discusses subatomic particles like protons, neutrons, isotopes, isobars, and how electrons are arranged in shells according to their quantum numbers.
Atoms:
Matter is made up of atoms, which are the smallest particles that make up matter. Atoms contain protons, neutrons, and electrons. Protons and neutrons are located in the center of the atom, called the nucleus, while electrons orbit around the nucleus. Scientists like Democritus, Dalton, Thompson, Rutherford, and Bohr contributed theories to our modern understanding of atomic structure, such as electrons orbiting the nucleus in specific energy levels.
Atomic Theory Overview
The document summarizes the historical development of atomic structure models from ancient philosophers to modern atomic theory. It describes early continuous models proposed by Aristotle and Democritus' earliest concept of atoms. John Dalton established the foundations of modern atomic theory by proposing atoms as indivisible particles that combine in whole number ratios. J.J. Thomson's experiments led him to propose a "plum pudding" model with electrons embedded in a positive sphere. Rutherford determined atoms have a small, dense positively charged nucleus surrounded by electrons. Modern atomic structure incorporates discoveries by Bohr and Chadwick that atoms consist of a nucleus of protons and neutrons surrounded by electrons in shells.
Chemchapt4 101015131310-phpapp02
- John Dalton developed the first modern atomic theory in the early 1800s based on experiments observing chemical reactions. He proposed that all matter is composed of tiny, indivisible particles called atoms.
- Atoms consist of a small, dense nucleus containing protons and neutrons, surrounded by electrons. The number of protons defines the identity of the atom as a particular chemical element.
- Atoms of the same element can differ in the number of neutrons, forming isotopes. Unstable isotopes decay through emission of radiation like alpha or beta particles to become stable.
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ISO/IEC 27001, ISO/IEC 42001, and GDPR: Best Practices for Implementation and...
Denis is a dynamic and results-driven Chief Information Officer (CIO) with a distinguished career spanning information systems analysis and technical project management. With a proven track record of spearheading the design and delivery of cutting-edge Information Management solutions, he has consistently elevated business operations, streamlined reporting functions, and maximized process efficiency.
Certified as an ISO/IEC 27001: Information Security Management Systems (ISMS) Lead Implementer, Data Protection Officer, and Cyber Risks Analyst, Denis brings a heightened focus on data security, privacy, and cyber resilience to every endeavor.
His expertise extends across a diverse spectrum of reporting, database, and web development applications, underpinned by an exceptional grasp of data storage and virtualization technologies. His proficiency in application testing, database administration, and data cleansing ensures seamless execution of complex projects.
What sets Denis apart is his comprehensive understanding of Business and Systems Analysis technologies, honed through involvement in all phases of the Software Development Lifecycle (SDLC). From meticulous requirements gathering to precise analysis, innovative design, rigorous development, thorough testing, and successful implementation, he has consistently delivered exceptional results.
Throughout his career, he has taken on multifaceted roles, from leading technical project management teams to owning solutions that drive operational excellence. His conscientious and proactive approach is unwavering, whether he is working independently or collaboratively within a team. His ability to connect with colleagues on a personal level underscores his commitment to fostering a harmonious and productive workplace environment.
Date: May 29, 2024
Tags: Information Security, ISO/IEC 27001, ISO/IEC 42001, Artificial Intelligence, GDPR
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ATOMIC MODELS.ppt
- 2. Atomic Models Dalton’s Model of Atom Thomson’s Model of Atom Rutherford’s Model of Atom n = 1 n = 2 n = 3 Bohr’s Model of Atom
- 3. A. DALTON’S MODEL OF ATOM John Dalton Dalton’s Model of Atom
- 4. DALTON’S MODEL OF ATOM In 1808, John Dalton proposed theory of matter. Atom is exceedingly small indestructible particles
- 5. DALTON’S THEORY Atoms cannot be broken up by any chemical process Atom of the same element are identical, but different from atoms of any other element Atom of different elements have different masses That compounds are formed by atoms of different element joining together in simple ratio That the masses of elements which combine together can be used to find the relative masses of atoms
- 6. B. THOMSON’S MODEL OF ATOM J.J Thomson The plum pudding model of atom Electron Spherical cloud of positive charge
- 7. Thomson’s Postulate Thomson postulated that an atom consisted of a diffuse sphere cloud of positive charge with negative electrons embedded randomly in it This model is often called the plum pudding model
- 8. C. RUTHERFORD’S MODEL OF ATOM Ernest Rutherford
- 9. The Rutherford’s Experiment Almost all of alpha particles passed through the foil undeflected Some alpha particles experienced slight deflection Only very small number of alpha particles suffered rather serious deflections as passed through the foil A much smaller umber of alpha particles were bounced back toward the particle source
- 10. Rutherford’s Model of Atom • The atom consisted of a heavy, small nucleus surrounded by electrons
- 11. D. BOHR’S MODEL OF ATOM Niels Bohr Bohr’s Model of Atom
- 12. Bohr’s Model of Hydrogen Atom • The electron in the hydrogen atom travels around the nucleus in a circular orbit. • The energy of the electron in an orbit is proportional to the distance from the nucleus • Only a limited number of orbit with certain energies are allowed. Each orbit corresponds to energy level of the electron and is identified by a quantum number. • Light is absorbed when an electron jumps to a higher energy orbit and emitted when electron falls into a lower energy orbit • The energy of the light emitted or absorbed is equal to the difference between energy of the orbit
- 13. E. MODERN MODEL OF ATOM Erwin Schodinger De Broglie Werner Heisenberg Modern model of atom
- 14. Modern Model of Atom • Atoms are made of protons, neutrons, and electrons. The protons and neutrons are found in the nucleus of the atom while electrons surround the nucleus. • A “cloud” of electron rapidly moving, negatively charged electron occupies virtually all the atomic volume and surround the tiny , central nucleus • A nucleus contain virtually all the mass of the atom.
- 15. Modern Model of Atom • Electron are arranged around the nucleus of an atom, in shells. The shells are numbered 1, 2, 3, etc, starting from the nucleus. These numbers are known as quantum numbers. • Each shell consists of a number of subshells, labelled s, p,d, or f. • Each subshell contain a number of orbitals, in which the electrons are placed. The number of orbitals in each subshell depend on the type of subshell • Each orbital can be represented by a square box. Maximum electron in each orbital is two electrons.
- 16. GOOD LUCK AND SEE YOU Drs. Upik sutrisno, NIP: 131 660 675/196001 1987 02 1 003 SMA NEGERI I KEDIRI JAWA TIMUR