Which of the following is a possible set of quantum numbers for an electron n, l, m subscript l, m subscript ?

(1, 0, 0, +1)

(2, 2, 1, +one over two )

(4, -3, 0, -one over two )

(3, 2, 1, -one over two )

Question

Which of the following is a possible set of quantum numbers for an electron n, l, m subscript l, m subscript ?

 (1, 0, 0, +1)

 (2, 2, 1, +one over two )

 (4, -3, 0, -one over two )

 (3, 2, 1, -one over two )

preetha · Answer

jo, the first one has spin of +1, which is not possible.  Spin can only be +or minus half.
Then the second one has n = l, which is not possible .  The values of l have to be n-1. The third one has -l, which is not possible.  so the only one possible is the last one.