Question

4) Which of the following set of quantum number is not possible?

(A) n=3, l=2, m=-1, s=-1/2

(B) n=4, l=2, m=-2, s=+1/2

(C) n=3, l=1, m=2, s=-1/2

(D) n=4, l=1, m=1, s=+1/2​

Answer 1

A) l value never be 3 for the n value 3. Because the 3rd shell is not having d orbital (l value o,1,2,3 indicates s,p,d & f orbital). So its wrong.

B) The electron belongs to 3dx1.

C) m value never be +2 for the l value  1 . Because m Value must be +l to −l.

D) The electron belongs to 3s1

Thus, Option A is not possible.

Hope it helps you!✔