1.

The oxidation number of sulphur in H_(2)S_(2)O_(8), H_(2)S_(2), O_(4), H_(2)S_(2)O_(6) are respectively

Answer»

`+3, +4, +5`
`+5, +4, +3`
`+6, +3, +5`
`+3, +5, +4`

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


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