1.

PbO_(2) is a stronger oxidising agent than SnO_(2). Or PbO_(2) can act an oxidiside agent.

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ANSWER :In `PbO_(2)` and `SnO_(2)` both lead and tin present in `+4` oxidation state.But due to STRONGER INERT pair effect,`Pb^(2+)` ion is more STABLE than `Sn^(2+)` ion. In other words, `Pb^(4+)` IONS i.e. `PbO_(2)`, is more easily reduced to `Pb^(2+)` ions than `Sn^(4+)` ions are reduced to `Sn^(2+)` ions.Thus, `PbO_(2)` acts as a stronger oxidising agent than `SnO_(2)`.


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