JEE Main & Advanced Sample Paper JEE Main Sample Paper-26

  • question_answer
    Unlike \[PbC\,{{l}_{4}},\,\,P{{I}_{4}}\] and \[PB{{r}_{4}}\] are not found because:

    A)  chlorine is more electropositive.

    B)  iodine and bromine are of large size.

    C)  iodine and bromine are unable to oxidise Pb to \[P{{b}^{4+}}\]

    D)  The statement is wrong.

    Correct Answer: C

    Solution :

    Iodine and bromine are unable to oxidize Pb to \[P{{b}^{4+}}\] On account of inert pair effect the stable oxidation state of Pb is +2. So \[P{{b}^{4+}}\] acts as oxidising agent and oxidises \[{{I}^{-}}\] and \[B{{r}^{-}}\] to \[{{I}_{2}}\] and \[B{{r}_{2}}\] respectively and itself reduced to

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