Quantum Numbers (U1)
7 important questions on Quantum Numbers (U1)
What is Hund's Rule?
- ea. orbital in a subshell is singly occupied w/ 1 e- before any one orbital is doubly occupied.
- All e-s in singly occupied orbitals have same spin
What is the Aufbau Principle?
What is Pauli's Exclusion Principle?
- No two e-s in same atom can be in same quantum state, having same #s
- ∴ e-s in same orbital must have diff orientation of intrinsic spin, denoted as +1/2 or -1/2
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Describe the 2ndary (Angular) Quantum Number (l) (Arnold Sommerfield) (Notes 2/2)
- Cc
What does the Magnetic Quantum Number (3rd Quantum Number) Ml do?
- Divides ea. Subshell/suborbit into individual orbitals
- describes how orbital is oriented in space relative to their subshell
What is Spin Quantum Number (4th Quantum Number) (ms) ?
How was the spin quantum number (4th Quantum Number) (ms) discovered? What were the results of the discovery?
- beam of H atoms split in 2
- beam was split ∵ 1/2 went to either pole
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