The set of quantum number not applicable to an electron

Options

A. `n = 1, l = 1, m = 1, s = + 1//2`
B. `n = 1,l = 0, m = 0, s = + 1//2`
C. `n = 1, l = 0, m = 0, s = - 1//2`
D. `n = 2, l = 0, m = 0, s = + 1//2`

Answer

A

Explanation

(a) Because `n ne 1`
`n = 1, 1 = 1, m = 1, s = + .^1//_2` is not possible.