IIT-JEE 2008 · Paper 1 · Chemistry Q58

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ChemistryAssertion and reason+3 / -1Question 58 of 69

STATEMENT-1: $\ce{Pb^{4+}}$ compounds are stronger oxidizing agents than $\ce{Sn^{4+}}$ compounds.

and

STATEMENT-2: The higher oxidation states for the group 14 elements are more stable for the heavier members of the group due to 'inert pair effect'.

STATEMENT-1 is True, STATEMENT-2 is True; STATEMENT-2 is a correct explanation for STATEMENT-1

STATEMENT-1 is True, STATEMENT-2 is True; STATEMENT-2 is NOT a correct explanation for STATEMENT-1

STATEMENT-1 is True, STATEMENT-2 is False

STATEMENT-1 is False, STATEMENT-2 is True

Answer and worked solution

Official answer: C

Statement 1. Pb(IV) readily goes to the more stable Pb(II), so Pb(IV) compounds (e.g. $\ce{PbO2}$ ) are strong oxidants; Sn(IV) is the stable state of tin. True.

Statement 2. The inert-pair effect makes the lower (+2) oxidation state more stable for the heavier members, not the higher one. False.

(C)

Topics:Group 14

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IIT-JEE 2008 · Paper 1, Chemistry question 58