Question

Give reason why sulphur exhibits negative valency.

Answer 1

Valency: The number of electrons gain or loose by an atom to achieve inert gas configuration is called valency.

Sulphur ${\mathrm{S}}_{16}=\underset{\mathrm{K}}{2},\underset{\mathrm{L}}{8},\underset{\mathrm{M}}{6}$

So, to achieve inert gas configuration sulphur will gain 2 electrons and acquire negative charge on it.

Thus, valency of Sulphur = -2