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Which one of the following set of quantum numbers is not possible for 4p electron:
(1) n=4, l=1, m=-1, s= +1/2
(2) n=4, l=1, m=0, s= +1/2
(3) n=4, l=1, m=2, s= +1/2
(4) n=4, l=1, m=-1, s= +1/2
Ans: n=4, l=1, m=2, s= +1/2
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