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Question
State the valency of sulphur in :
(a) SO2
(b) SO3
Answer in Brief
Solution
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`
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