The oxidation number of sulphur in `H_(2)SO_(4),H_(2)S_(2)O_(4) and H_(2)S_(2)O_(6)` are respectively

Options

A. `+3, +4, +5`
B. `+5, +4, +3`
C. `+6, +3, +5`
D. `+3, +5, +4`

Answer

C

Explanation

`H_(2)S_(2)O_(8)` :
`{:(" O O"),(" || ||"),(HO-S-O-O-S-OH" "S(+VI)),(" || ||"),(" O O"):}`
`{:(" O O"),(" || ||"),(H_(2)S_(2)O_(4) : HO-S-S-OH" "S(+III)):}`
`{:(" O O"),(" || ||"),(H_(2)S_(2)O_(6) : HO-S-S-OH" "S(+V)),(" || ||"),(" O O"):}`