1.

The size of the species, Pb,Pb^(2+), Pb^(4+) decreases as -

Answer»

`Pb^(4+) gt Pb^(2+) gt Pb`
`Pb gt Pb^(2+) gt Pb^(4+)`
`Pb gt Pb^(4+) gt Pb^(2+)`
`Pb^(4+) gt Pb gt Pb^(2+)`

ANSWER :B


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