The stability of dihalides of Si, Ge, Sn and Pb increases steadily in the sequence [AIEEE 2007]

JEE Main Chemistry question

The stability of dihalides of and increases steadily in the sequence [AIEEE 2007]

(A)GeX_2 < SiX_2 < SnX_2 < PbX_2
(B)SiX_2 < GeX_2 < PbX_2 < SnX_2
(C)SiX_2 < GeX_2 < SnX_2 < PbX_2Correct
(D)PbX_2 < SnX_2 < GeX_2 < SiX_2

Answer: (C)

Solution

The inert pair effect increases down group 14, so the lower (+2) oxidation state and hence its dihalides become progressively more stable from Si to Pb, giving the steadily

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Question ID VK-138316