Chemistry - Redox Reactions Question with Solution | TestHub

Two S=O bonds contribute +4 (O more electronegative); two S-C bonds contribute -2 (S more electronegative than C): +4 - 2 = +2. Check by group charges: 2(+1) + $x$ + 2(-2) = 0 $\Rightarrow$ $x$ = +2. Hence (b).