Which of the following set is an acceptable set of quantum numbers for a 4p electron?

Question

-n = 4, l = 2, ml = 1, ms = 1

-n = 4, l = 1, ml = 2, ms = −1/2

-n = 4, l = 1, ml = 1, ms = −1/2

-n = 5, l = 1, ml = −1, ms = −1/2

-n = 4, l = 4, ml = 3, ms = +1/2

Answer 1

For a 4p electron n must = 4 and l must = 1. ml can be -1, 0 or +1 and ms can be + or - 1/2.

Looking at the options, it appears that n = 4, l = 1, ml = 1, ms = −1/2 is the correct one (third one on list)