write the four Quantum numbers for the 21st electron in scandium

The electronic configuration of Scandium-21 is, 1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d1 The 21st electron of scandium is in 3d sub shell. principal quantum number (n)= 3 azimuthal quantum number (l)= 2 magnetic quantum number (m)=-2, -1, 0, +1 or +2 spin quantum number (s)= +1/2

Answer

n=3 l=1 ml= -1,0,+1 ms=+1/2