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1 Pauli's exclusion principle

1 Pauli's exclusion principle

Point 22 of 25 — Chapter 2 — Atomic StructureQuestion bank: 1 questions (0 with pictures)

22 5.1 Pauli's exclusion principle

No two electrons in the same atom can have the same set of four quantum numbers.

  • Consequence: an orbital (same n, ℓ, mℓ) can hold only two electrons, and these must differ in ms (+½ and −½).
  • Example, the two electrons of the 3s sublevel:
1first
n
  • 3
ℓ
  • 0
mℓ
  • 0
ms
  • +½
2second
n
  • 3
ℓ
  • 0
mℓ
  • 0
ms
  • −½

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