Question

The sum of oxidation numbers of sulphur in $H_2{S}_2{O}_8$ is:

• A. $+2$
• B. $+6$
• C. $+7$
• D. $+12$

Answer 1

The correct option is D $+12$

Oxidation number denotes the oxidation state of an element in a compound ascertained according to a set of rules formulated on the basis that $e^{-}$pair in a covalent bond belongs entirely to more electronegative element.

Structure of $H_2{S}_2{O}_8$ is mentioned on the image above.