Which set of quantum numbers for an electron of an atom is not possible

Options

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

Answer

B

Explanation

n = 1and l = 1 not possible for s-orbitals.