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Question:

The orbital angular momentum quantum number of the state S2 is:

0

1

2

3

Solution:

For S1 (spherically symmetrical) node = 1 ⇒ n-l-1 = 1 n=2
For S2, radial node = 1
Es2 = l(l+1)ħ²/2I = EHin ground state = l(l+1)ħ²/2I