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Chemistry ‘S’ – Atomic Orbitals and Quantum Numbers
I Quantum Numbers – specify the __________ of atomic orbitals and the
___________ of electrons in orbitals
Set of ______ - Like the address of an electron
1. Principal
2. Angular Momentum (Pages 108 and 109 in text)
3. Magnetic
4. Spin
II Electron Configurations
The ____________ of electrons in an atom
1. Regular
2. Shorthand (Noble Gas)
3. Orbital Notation
4. Electron Dot Notation
Rules Governing Electron Configurations
1. Aufbau Principle – electrons occupy the ________ energy level available
2. Pauli Exclusion Principle – no two electrons in the same atom can have the
_______ _______ of four quantum numbers
3. Hund’s Rule
-electrons occupy orbitals _______ at a time before a second electron is added
-all electrons in singly occupied orbitals must have the _______ spin
Configuration Examples Using Chart (in notes)
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