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Electron Distribution Goal: Determine electron structures in atoms Orbital level Sublevel
How are these organized? N = 1 N = 2 N = 3 N = 4 Level 1 sublevels Level 2 sublevels Level 4 sublevels Level 3 sublevels s s s s p p p d d f
Remember: 1s is smaller than 2s, 2s is smaller than 3s, etc. How about energy? Which has the most?
How do atoms put their electrons in these sublevels? Lowest energy levels are filled first. Sublevels are filled “s”, then “p”, then “d”, then “f”. Well, sort of...
Orbitals Principal quantum number 3s 3p 3d 4s 4p 4d 4f 1s 2s 2p 5s 5p 5d 5f 6s 6p 6d 6f 7s 7p 7d 7f s p d f 1 2 3 4 5 6 7
1s orbital holds two electrons e-
Then consider the next orbital: 2s (which also holds only two e-.) e-
Electron configuration for … Scandium Look up the number of electrons (same as the number of protons). Use the diagonal rule. Scandium is #21. That means Sc has _____ electrons. 26 21
Electron configuration for … Scandium
Energy level (Principle Quantum #) # of electrons (add these) Sublevel
Electron configuration for … Scandium Add These
Practice Electron configurations for: Neon Aluminum Vanadium
Quantum Number Keep in mind are probabilities of finding electrons in certain places doing certain things(spin). n = what energy level (1, 2, 3, 4...)
Quantum Numbers n, l, m, and s – Used to describe an electron in an atom Probable location n – Principal Quantum Number – Represents main energy level.
Electron Configurations. The way electrons are arranged in atoms.
After today, you will be able to…
Chemistry Daily 10’s Week According to the quantum theory of an atom, in an orbital A. an electron's position cannot be known precisely. B. an.
Levels/Shells Principal Quantum Number (1-7) (2 x level 2 ) determines the amount of electrons that can fit into that energy level Electron Organization.
Section Electron Configurations. Objectives Arrange electrons in atoms Describe quantum mechanics in terms of atomic orbitals Identify characteristics.
What are electron configurations? The way electrons are arranged in atoms. Used to indicate which orbitals (energy levels) are occupied by electrons for.
Protons and Neutrons form a nucleus.. Electrons Atomic Number and Mass Number Atomic Number Is the Number of Protons of the Nucleus.
Hund’s Rule, Orbital Diagrams, and Valence Electrons
Section 4-3 Electron Configurations. Quantum Mechanical Model Energy Levels have sublevels Each sublevel contains orbitals –Orbital – a 3-D region around.
Aim: How do chemists represent an atom’s “electron configuration”? Vocabulary: Electron configuration- probable location of electron; the electron’s “address.”
Unit: Electron Configurations Writing Electron Configurations and Orbital Notations.
Electron Configuration Writing e - configurations Drawing orbital notations.
Orbital Filling Electron Configurations Where do these electrons go?
Bohr model and electron configuration. Bohr’s Model Why don’t the electrons fall into the nucleus? Move like planets around the sun. In circular orbits.
Construction of an Atom Notes. Heisenberg Uncertainty Principle States that we cannot know the position and the speed of a moving object simultaneously.
Arrangement of e- e- are arranged in ENERGY LEVELS There are 7 energy levels Level 1 is closest to the nucleus and has the lowest energy Level 7 is farthest.
Order of orbitals (filling) in multi-electron atom 1s < 2s < 2p < 3s < 3p < 4s < 3d < 4p < 5s < 4d < 5p < 6s Aufbau Principle: an electron occupies the.
Electron Configurations 4.3. Pauli Exclusion Principle No more than two e- can occupy a single orbital at a time e- spin in opposite directions
Electrons in Atoms. So, you live on Aspen St., but what is your exact address? We know that electrons can occupy energy levels, but they can also.
How Electrons are Configured in Energy Shells The lowest energy arrangement of electrons is the most stable. When electrons are arranged in the lowest.
Wednesday, October 21 st, 2015 Bohr Model of the Atom.
Unit 4: The Atom & the Electron Configurtation James Hutchison.
Chapter 5 Quantum Numbers Part 2. The Third Quantum Number The third quantum number identifies the orbital that the electron is in.
Chapter 5 Electronic Structure and Periodic Trends
The distribution of electrons of an atom or molecule (or other physical structure) in atomic or molecular orbitals an energy is associated with each electron.
Energy Levels Each energy level has a number called the PRINCIPAL QUANTUM NUMBER, n Each energy level has a number called the PRINCIPAL QUANTUM NUMBER,
Orbital Notations and Electron Configurations 1. 2 N = principle energy level 2N 2 = # of e - in N.
The Quantum Mechanical Model of the Atom. Schrodinger The quantum mechanical model determines the energy an electron can have and the PROBABILITY of finding.
The locations of electrons (Quantum number) Principal Energy Level Energy Sublevel Specific Orbitals(Probability specific to the x, y, or z axis) (Shells.
Chemistry Notes Electron Configurations. Studying the arrangement of electrons in atoms helps one understand chemical activity. From an electron configuration.
Do Now: Complete Protons, Neutrons, and Electrons Practice Worksheet.
Orbitals and Electron Configurations Mrs Russotto.
Electron Location: Part III Electron Configuration.
Quantum Mechanical Model: Electron Configurations
Electron Arrangement or Electron Configuration. Electron Arrangement/Configuration modern chemistry changed some of Bohr’s ideas each energy level is.
Electron Configurations Niels Bohr “Any one who is not shocked by Quantum theory does not understand it.”
Electron Configuration and Periodic Trends. Essential Question How do Aufbau’s Principle, the Pauli Exclusion Principle, and Hund’s Rule dictate the arrangement.
Understanding Electron Configuration
NOTES: 5.2 – Electron Configurations Electron Configuration! VIDEO.
Electron Configurations Ch 5.3 CVHS Chemistry. Energy Levels & Sublevels & Spectra Notice Hg & Ne have more spectral lines than H – Lines represent energy.
Electron Configuration Filling of atomic orbital's and energy levels.
Electron Configuration 301 Chemistry. Year 12 – The Bohr Atom Electron configurations used only the energy levels (shells).. – Eg. Electron configuration.
Quantum Numbers How to find your atom’s address in the Periodic Table Hotel.
Modern Model of the Atom
The Quantum Mechanical Picture of the Atom
Quantum Numbers Each electron in an atom has a unique set of 4 quantum numbers which describe it. Principal quantum number Angular momentum quantum.
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