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The number of orbitals associated with quantum numbers n = 5, mₛ = +1/2 is:
- 15
- 50
- 11
- 25
Correct answer: 25
Solution
The number of orbitals in shell n=5 is n^2 = 25. Each orbital can hold one electron with ms = +1/2, so 25 orbitals are associated with n=5, ms=+1/2.
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