Which of the following represent a correct set of quantum numbers for an electron?

Question

(a) n = 1 l = 1 ml = 0 ms = +1/2


(b) n = 2 l = 0 ml = 1 ms = -1/2


(c) n = 2 l = 1 ml = 0 ms = -1/2


(d) n = 2 l = 0 ml = -1 ms = -1/2


(e) n = 3 l = 1 ml = 2 ms = +1/2

Answer 1

The only right answer is c. n = 2 implies that l =0, 1,or 2. selecting l = 1 implies ml = -1, 0, 1. and ms can equal 1/2 or -1/2.

Answer 2

E. l and ml can't be zero.

Answer 3

c?