Identify the correct sequence of increas...

Identify the correct sequence of increasing number of `pi-` bonds in the structures of the following molecules.
`I. H _(2) S_(2) O_(6)`
II. `H_(2)SO_(3)`
III. `H_(2)S_(2) O_(5)`

A

`I,II,III`

B

`II,III,I`

C

`II,I,III`

D

`I,III,II`

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The correct Answer is:

B

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