Chemistry
posted by earl .
Indicate which of the following quantum numbers are unacceptable:
(a)(1,2,0,1/2) (b) (3,2,0,1/2) (c)(3,2,2,1) (d) (4,3,2,1/2)

a and c are not acceptable.
a. n = 1
l can be 0 and only 0 which makes 2 no go.
c. n = 3
l can be 0, 1, or 2 which is ok at 2
ml can be 2,1,0,1,2 so 2 is ok.
ms can be +1/2 or 1/2 so 1 is not ok.