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JEE Main

Exam: JEE Main
Subject: Chemistry
Chapter: p Block Elements (Group 13 & 14)

JEE Main · Chemistry · p Block Elements (Group 13 & 14)

Ge (II) compounds are powerful reducing agents whereas Pb (IV)...

Ge

(II) compounds are powerful reducing agents whereas

Pb

(IV) compounds are strong oxidants. It is due to -

Options

A $Pb$ is more electropositive than $Ge$
BIonization potential of Lead is less than that of $Ge$
CIonic radii of ${Pb}^{2 +}$ and ${Pb}^{4 +}$ are larger than those of ${Ge}^{2 +}$ and ${Ge}^{4 +}$
DMore pronounced inert pair effect in lead than in $Ge$

Correct answer

D. More pronounced inert pair effect in lead than in $Ge$

Step-by-step solution

Due to inert pair effect, the $+ 2$ oxidation state stability increases down the ${14}^{th}$ group, and $+ 4$ oxidation state stability decreases down the group. $Ge ( II )$ tends to acquire $Ge ( IV )$ state by loss of electrons. Hence,~it~acts as a~reducing agent.& $Pb ( IV )$ tends to acquire $Pb ( II )$ & oxidation state& by gain of electrons. Hence, it acts as an& oxidising agent.

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