1.

Correct statbility order of metal cation is /are :

Answer»

`PB^(2+) lt Sn^(2+)`
`Pb^(4+) lt Pb^(2+)`
`Sn^(4+) lt Sn^(2+)`
`Pb^(4+) lt Sn^(4+)`

Solution :Due to phenomenon of inert PAIR EFFECT `Pb^(2+)` is more stable than `Pb^(4+)`


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