Question
From the following sets of quantum numbers, state which are possible. Explain why others are not permitted.
(i) n = 0, l =0, m = 0, s= + 1/2
(ii) n = 1, l =0, m =0, s = +1/2
(iii) n =1, l =1, m = -0, s= +1/2
Solution
(i) Not possible because n cannot be 0.
(ii) Possible.
(iii) Not possible as when n= 1, l cannot be 1.
