Question

How many electrons in each have clock wise spin?
(A) Na(B) K(C) Ne(D) N

Answer 1

(A) Na ${1s}^2{2s}^{2}2p^6{3s}^1$ One electron in each orbital have $s=\frac{+1}{2}$

$\therefore$ 6 electrons in Na have clockwise spin.

(B) K ${1s}^2{2s}^{2}2p^6{3s}^{2}3p^6{4s}^1=\left[Ar\right]{4s}^{1}9+1=10e^{-}s$

Thus, 10 electrons in K have clockwise spin.

(C) Ne ${1s}^2{2s}^{2}2p^{6}5e^{-}s$

(D) N ${1s}^2{2s}^{2}2p^{3}2+3=5e^{-}s$

Thus 5 electrons each in Ne and N have clockwise spin.