(a). Write down the electronic configuration of (i) magnesium atom, and (ii) magnesium ion,
(At No. of Mg=12) ,brgt (b). Write down the electronic configuration of (i) sulphur atom, and (ii) sulphide ion.
(At. No. of S=16).

Explanation

(a) (i)
(ii) 2,8
(b) (i) 2,8,6
(ii) 2,8,8