Question

State the valency of sulphur in :

(a) SO₂
(b) SO₃

Answer 1

As valency of oxygen is 2

Valency of sulphur in

(a)

SO₂ = interchanging the subscript and writing

it as superscript.

= `"S"^2"O"^1 = "S"^ {2 xx 2}  "O"^{1 xx 2} = "S"^4"O"^2`

∴ Valency of sulphur is 4

(b)

`"SO"_3` = = `"S"^{3 xx 2} "O"^{1 xx 2} = "S"^6"O"^2`