Atomic Structure - Result Question 91
67. Not considering the electronic spin, the degeneracy of the second excited state $(n=3)$ of $H$-atom is 9 , while the degeneracy of the second excited state of $H^{-}$is
(2015 Adv.)
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Answer:
Correct Answer: 67. $(3)$
Solution:
- In an one electron (hydrogenic) system, all orbitals of a shell remains degenerate, hence in second excited state, the degeneracy of $H$-atom is nine
In case of many electrons system, different orbitals of a shell are non-degenerate. Hence,
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