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The set of quantum numbers not applicable for an electron in an atom is:
(1) n= 1, l=1, m1= 1, ms= +1/2
(2) n= 1, l=0, m1= 0, ms= +1/2
(3) n= 1, l=0 m1= 0 ms= -1/2
(4) n= 2, l=0m1= 0, ms= +1/2
Ans: n= 1, l=1, m1= 1, ms= +1/2
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