Outline for Notes, Chapter 7, Chang

Outline for Notes, Chapter 7, Chang - Pauli Exclusion...

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Outline for Notes Chapter 7 Wave Theory of Light and Matter λν = c electromagnetic radiation: E = hν Atomic Structure • Niels Bohr, 1914 Erwin Schrodinger, Quantum Mechanical Model, 1926 Heisenberg Uncertainty Principle, 1927 1
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Quantum Mechanical Model of the Atom wavefunction ( ψ ): ψ 2 : Wavefunctions are described by 4 variables called quantum numbers : principal quantum number, n angular-momentum quantum number, magnetic quantum number, m 2
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What are the shapes and orientations of the orbitals? z y x s orbital z y x z y x z y x p x orbital p y orbital p z orbital Filling Electrons into Orbitals Spin Quantum Number, m s Each orbital can hold up to 2 electrons.
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Unformatted text preview: Pauli Exclusion Principle : no two electrons in an atom can have the same 4 quantum numbers. 3 What are the relative energy levels of the orbitals? Aufbau Principle : 3 rules for orbital filling-fill lower energy orbitals first-each orbital can have only 2 electrons; must be of opposite spin-if 2 or more degenerate orbitals are available, half fill each degenerate orbital with electrons of the same spin before pairing electrons ( Hunds Rule ) ground-state electron Atom # e-configuration Orbital-filling Diagram H 1 1s 1 He 2 1s 2 Li Be B C N O F Ne 4...
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This note was uploaded on 04/23/2009 for the course GENERAL CH 1230 taught by Professor Unknown during the Spring '04 term at Toledo.

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Outline for Notes, Chapter 7, Chang - Pauli Exclusion...

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