Which of the following have been arranged in the decreasing order of oxidation number of sulphur ?

Options

A. `Na_(2)S_(4)O_(6) gt H_(2)S_(2)O_(7) gt Na_(2)S_(2)O_(3) gt S_(8)`
B. `H_(2)SO_(4) gt SO_(2) gt H_(2)S gt H_(2)S_(2)O_(3)`
C. `SO_(2)^(2+) gt SO_(4)^(2+) gt SO_(3)^(2-) gt HSO_(4)^(-)`
D. `H_(2)SO_(4) gt H_(2)SO_(3) gt SCl_(2) gt H_(2)S`

Answer

D

Explanation

`Na_(2)overset(2//3)S_(4)O_(6): H_(2)overset(+6)S_(2)O_(7), Na_(2)overset(+2)S_(2)O_(2), overset(0)S`
`H_(2)overset(+6)SO_(4), Soverset(+4)O_(2): H_(2)overset(-2)S : H_(2)overset(+7)S_(2)O_(8)`
`overset(+6)SO_(2)^(2+) , overset(+6)O_(4)^(2+): overset(+4)SO_(3)^(2-) : Hoverset(+6)SO_(4)^(-)`
`H_(2)overset(+6)SO_(4): H_(2)overset(+4)SO_(3): overset(+2)SCl_(2): H_(2)overset(-2)S`