1.

In one of the following compounds, the oxidation number of sulphur is not a whole numbers

Answer»

`Na_(2)S_(4)O_(6)`
`H_(2)SO_(5)`
`H_(2)SO_(4)`
`Na_(2)S_(2)O_(3)`

SOLUTION :In `Na_(2)OVERSET(+2.5)(S_(4)O_(6)), 'S' O.S = +2.5`


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