1.

The size of Pb,Pb^(2+)and Pb^(4+) decreases in the order:

Answer»

`Pb^(4+)gtPb^(2+)gtPb`
`PbgtPb^(4+)gtPb^(2+)`
`Pb^(4+)gtPb gt Pb^(2+)`
`Pbgt Pb^(2+)gt Pb^(4+)`

Answer :B


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