STATES OF AN ATOM Ground state: when an atom is at its lowest energy level Excited state when at...

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STATES OF AN ATOM Ground state: when an atom is at its lowest energy level Excited state when at atom gains energy

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Valence electrons: are the electrons in the last level of energy. WE ALREADY KNOW THIS? Do we?

Transcript of STATES OF AN ATOM Ground state: when an atom is at its lowest energy level Excited state when at...

Page 1: STATES OF AN ATOM Ground state: when an atom is at its lowest energy level Excited state when at atom gains energy.

STATES OF AN ATOMGround state: when an atom is at its lowest

energy levelExcited state when at atom gains energy

Page 2: STATES OF AN ATOM Ground state: when an atom is at its lowest energy level Excited state when at atom gains energy.

Orbitals An orbital is a three dimensional region

around the nucleus where probably an e- is found

There are four type of orbitals : s, p, d, and fEvery single orbital can fit 2 electrons max.

Orbital Shape Number of orbitals

s Sphere 1

p dumbbells 3

d “flower” 5

f “weird” 7

Page 3: STATES OF AN ATOM Ground state: when an atom is at its lowest energy level Excited state when at atom gains energy.

Valence electrons: are the electrons in the last level of energy.

WE ALREADY KNOW THIS? Do we?

Page 4: STATES OF AN ATOM Ground state: when an atom is at its lowest energy level Excited state when at atom gains energy.

Principles and Rules For e config.

Heisenberg uncertainty principle: States that it is impossible to know both the velocity and position of a particle at the same time

Afbau Principle: States that each electron occupies the lowest energy orbital available.

Hund’s rule: states that single electrons with the same spins must occupy each equal-energy orbital before they pair.

Pauli exclusion principle: States that every single e must have different set of quantum numbers.

Page 5: STATES OF AN ATOM Ground state: when an atom is at its lowest energy level Excited state when at atom gains energy.

Orbitals s

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Orbitals p

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Orbitals d

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Orbitals f

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ORBITAL DIAGRAMUse He = ↑↓ 1sBe = ↑↓ ↑↓ 1s 2s N = ↑↓ ↑↓ ↑ ↑ ↑ 1s 2s 2px2py2pz

Fe ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑ ↑ ↑ ↑_

1s 2s 2px2py2pz 3s 3px3py3pz 4s 3d 3d 3d 3d 3d

Page 10: STATES OF AN ATOM Ground state: when an atom is at its lowest energy level Excited state when at atom gains energy.

DOT NOTATIONPlace dots around the element symbol

indicating the number of electrons in the last level of energy.

Page 11: STATES OF AN ATOM Ground state: when an atom is at its lowest energy level Excited state when at atom gains energy.

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1s2 2s2 2p6

Last level of energy

This particular atoms has2 levels of energy 10 electron total 2 + 2 +68 electrons in the last level of energy 2 +6What atom is this?How many dots are place around its symbol

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Orbitals f

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atom “image”

Page 14: STATES OF AN ATOM Ground state: when an atom is at its lowest energy level Excited state when at atom gains energy.

atom “images”

Page 15: STATES OF AN ATOM Ground state: when an atom is at its lowest energy level Excited state when at atom gains energy.

orbital s

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2 orbitals p

Page 17: STATES OF AN ATOM Ground state: when an atom is at its lowest energy level Excited state when at atom gains energy.

2 orbitals p

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orbital d

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orbital f

Page 20: STATES OF AN ATOM Ground state: when an atom is at its lowest energy level Excited state when at atom gains energy.

Orbital s

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Orbital p

Page 22: STATES OF AN ATOM Ground state: when an atom is at its lowest energy level Excited state when at atom gains energy.

Orbitlas d

Page 23: STATES OF AN ATOM Ground state: when an atom is at its lowest energy level Excited state when at atom gains energy.

Orbital d

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Orbital f

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Orbital f

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An atom


Energy From The Atom

Energy From The Atom

Light Emission - irion-isd.org · 2014. 2. 27. · Frequencies of light that represent the correct energy jumps in the atom will be absorbed. When the atom de-excites, it emits the

Light Emission - irion-isd.org · 2014. 2. 27. · Frequencies of light that represent the correct energy jumps in the atom will be absorbed. When the atom de-excites, it emits the

Cellular Respiration Harvesting Chemical Energy. Review: Oxidation and Reduction Oxidized atom Electron is donated Energy is donated Reduced atom Electron.

Cellular Respiration Harvesting Chemical Energy. Review: Oxidation and Reduction Oxidized atom Electron is donated Energy is donated Reduced atom Electron.

Chapter 6 – Chemical Bonds. 6.1 Ionic Bonding When the highest occupied energy level of an atom is filled with electrons, the atom is stable and not likely.

Chapter 6 – Chemical Bonds. 6.1 Ionic Bonding When the highest occupied energy level of an atom is filled with electrons, the atom is stable and not likely.

The Dark Energy Atom Interferometer Experiment

The Dark Energy Atom Interferometer Experiment

Notes: Chapter 11 - honorschem.kmacgill.com · Notes: Chapter 11 The source of all light is the atom Light is generated when the electrons in an atom are excited to a higher energy

Notes: Chapter 11 - honorschem.kmacgill.com · Notes: Chapter 11 The source of all light is the atom Light is generated when the electrons in an atom are excited to a higher energy

Chapter 32 - Modern Physics Rutherford Model of the Atom Bohr Model of Atom –Quantized Energy Levels –Atomic Spectra Quantized Energy levels and Electron.

Chapter 32 - Modern Physics Rutherford Model of the Atom Bohr Model of Atom –Quantized Energy Levels –Atomic Spectra Quantized Energy levels and Electron.

C HAPTER 6: C HEMICAL BONDS. S TABLE E LECTRON C ONFIGURATIONS When is an atom unlikely to react? When the highest occupied energy level of an atom is.

C HAPTER 6: C HEMICAL BONDS. S TABLE E LECTRON C ONFIGURATIONS When is an atom unlikely to react? When the highest occupied energy level of an atom is.

4.3 Modern Atomic Theory 4-3 Cornell Bohr’s Model of the Atom –Energy Levels –Draw an example of Bohr’s Model –Evidence of energy levels What happens when.

4.3 Modern Atomic Theory 4-3 Cornell Bohr’s Model of the Atom –Energy Levels –Draw an example of Bohr’s Model –Evidence of energy levels What happens when.

ENERGY FROM ATOM….NUCLEAR POWER

ENERGY FROM ATOM….NUCLEAR POWER

Lesson 1 Energy Basics | The Harnessed Atom (2016)

Lesson 1 Energy Basics | The Harnessed Atom (2016)

When is an atom unlikely to react?

When is an atom unlikely to react?

4.3 Modern Atomic Theory What can happen when an atom absorbs energy? - an increase in kinetic energy or a phase change energy may be absorbed by an atom,

4.3 Modern Atomic Theory What can happen when an atom absorbs energy? - an increase in kinetic energy or a phase change energy may be absorbed by an atom,

Energy From the Atom. Or… Energy From the Atom Energy from the Atom Energy can be produced from either splitting atoms or combining them. Splitting atoms.

Energy From the Atom. Or… Energy From the Atom Energy from the Atom Energy can be produced from either splitting atoms or combining them. Splitting atoms.

Nuclear Energy - IIASA · Chapter 14 Nuclear Energy 1075 14.1 Introduction Fission energy is released when the nucleus of a very heavy atom such as uranium-235 or plutonium-239 splits

Nuclear Energy - IIASA · Chapter 14 Nuclear Energy 1075 14.1 Introduction Fission energy is released when the nucleus of a very heavy atom such as uranium-235 or plutonium-239 splits

» Ionic Bond: When an atom donates electrons to another atom.

» Ionic Bond: When an atom donates electrons to another atom.

Menu Substances appear coloured when visible light energy is absorbed by an atom, ion or molecule.

Menu Substances appear coloured when visible light energy is absorbed by an atom, ion or molecule.

Atom Molecule Compound - West Linn · 2013. 7. 16. · When an atom gains electrons it becomes more negatively charged, called an anion. When an atom loses electrons it becomes more

Atom Molecule Compound - West Linn · 2013. 7. 16. · When an atom gains electrons it becomes more negatively charged, called an anion. When an atom loses electrons it becomes more

STRUCTURE, ENERGY AND ATOM MIGRATION - HAL - INRIA

STRUCTURE, ENERGY AND ATOM MIGRATION - HAL - INRIA

On the Energy Levels of the Hydrogen Atom

On the Energy Levels of the Hydrogen Atom