Question

Oxidation state of $S$ in $H_2S_2O_8$ is

• A. $+6$
• B. $+7$
• C. $+8$
• D. $0$

Answer 1

Answer: (A)

$+6$

Answer 2

$H_2S_2O_8$ Two oxygen atoms are involved in peroxide linkage, hence oxidation number will be $-1$ (each).