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Question

The spin angular momentum for the s electron in Hatom is:
  1. 3h4π
  2. h2π
  3. h4π
  4. 3h2π


Solution

The correct option is A 3h4π
The electronic configuration of hydrogen atom is 1s1.
So the total spin quantum number S=12
Spin angular momentum =S(S+1)h2π=12(12+1)h2π=3h4π

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