Consider the following elements In, Ti, Al, Pb, Sn and Ge. The most stable oxidation states of elements with highest and lowest first ionisation enthalpies, respectively, are (A) +1 and +4 (B) +4 and

Question

Consider the following elements In, Ti, Al, Pb, Sn and Ge. The most stable oxidation states of elements with highest and lowest first ionisation enthalpies, respectively, are

(A) +1 and +4
(B) +4 and +1
(C) +4 and +3
(D) +2 and +3

Prashant Kotian · Accepted Answer

Correct answer: A. From In, Ti, Al, Pb, Sn, Ge. Highest IE = Ge & most stable oxidation state = +4 Lowest IE = In, & most stable oxidisation state = +3

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