Question

Assertion :+4 oxidation state of Pb is less stable than +2 state. Reason: ${PbI}_4$ is not stable compound.

• A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
• B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
• C. Assertion is correct but Reason is incorrect
• D. Both Assertion and Reason are incorrect

Answer 1

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion. The correct explanation for non existence of $Pb{I}_4$ is that $Pb-I$ bond initially formed during the reaction does not release enough energy to unpair $6s^2$ electrons and excite one of them to higher energy orbital to have four unpaired electron around lead atom.