Assertion : $P b C l_{2}$ is more stable than $P b C l_{4}$ . Reason: $P b C l_{4}$ is powerful oxidizing agent.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.

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Assertion is correct but Reason is incorrect.

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Both Assertion and Reason are incorrect.

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Solution

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.
As we move down the group, II oxidation state become more stable than IV so Pb(II) is more stable than Pb(IV) and $P b C l_{4}$ has high tendency to get electron and converts into $P b C l_{2}$ so it acts as strong oxidising agent.

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