Determine the valency of oxygen and sulphur

cbse
structureofatom

#1

(i) Oxygen (atomic number = 8)
\Electronic distribution =2,6(K,L)
.’. Valency =8 - 6=2
(it) Sulphur (atomic number = 16)
Electronic distribution = 2, 8, 6(K,L,M)
.’. Valency =8 - 6 = 2