Question

Statement 1:$PbI_{4}$ is a stable compound
Statement 2: $Pb^{2+}$ ions with concentrated solution of $KI$ forms a soluble complex

• A. If both Statement 1 and Statement 2 are true and the statement 2 is the correct explanation of the statement 1.
• B. Ifboth Statement 1 and Statement 2 are true but statement 2 is not the correct explanation of the statement 1.
• C. If Statement 1 is true but Statement 2 is false.
• D. If Statement 1 is false but Statement 2 is true.

Answer 1

Answer: (D)

Statement 1: $Pb^{+4} \xrightarrow{+2e} Pb^{2+}$ (due to inert pair effect)
$2I^{-} \xrightarrow{I_{2}} (I^{-}$ acts as a reducing agent) so $PbI_{4}$ is not a stable compound.
Statement 2: $Pb^{2+} + 4I^{-} \to [PbI_{4}]^{-}$