Question

Unlike $PbCl_{4}, PI_{4}$ and $PBr_{4}$ are not found because:

• A. bromine and iodine are more electronegative than chlorine.
• B. iodine and bromine are smaller in size.
• C. larger iodine and bromine are able to reduce $Pb^{4+}$ to $Pb^{2+}$ or Pb.
• D. the statement is incorrect

Answer 1

Answer: (C)

$Pb^{4+}$ has higher polarising power and $Br^{-}$ and $I^{-}$ being larger in size can easily give the electrons to $Pb^{4+}$, i.e., as compared to $Cl^{-}, Br^{-}$ and $I^{-}$ are good reducing agents