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11.13.    Rationalise the given statements and give chemical reactions :

        (c) Lead is known not to form an iodide, PbI_{4}.

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Lead is not form PbI_{4}. Pb(+4) is oxidising in nature and I^- is reducing in nature. So the PbI_{4}. is not stable in this state. Pb(+4) oxidises I^- to I_2 and itself get reduced to Pb(+2).

PbI_{4}\rightarrow PbI_{2}+I_{2}

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manish

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