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Question

Statement I Pb4+ compounds are stronger oxidising agents than Sn4+ compounds.
Statement II The higher oxidation states for the group 14 elements are more stable for the heavier members of the group due to 'inert pair effect'.(J2008,3M)

A
Statement I is true; Statement II is true; Statement II is the correct explanation of Statement I.
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B
Statement I is true; Statement II is true; Statement II is not the correct explanation of Statement I.
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C
Statement I is true; Statement II is false.
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D
Statement I is false; Statement II is true.
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Solution

The correct option is C Statement I is true; Statement II is false.
Statement I is true. Stronger oxidising agent is one which itself can easily be reduced. Pb4+ is unstable, due to inert pair effect, can easily be reduced to stable Pb2+, hence a stronger oxidising agent than Sn4+
Statement II is false. Due to inert pair effect, the higher oxidation states of group 14 elements becomes less stable for heavier member.

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