Question

19. "How many values does the spin quantum number have?"
(A) 2
(B) 21
(C) 2n
(D) 2m​

Answer 1

Answer:

A)2 they can be +1/2 or -1/2 reason is due to opposite spin net magnetic moment becomes zero and thus system is stable.

Answer 2

(A) 2

The spin quantum number tells us the orientation of an electron within an orbital and has two possible values: ms = +1/2 for spin up and ms = -1/2 for spin down.