MEDIUMMCQ SINGLENEET ChemistryInorganic Chemistryp-Block (group 13 and 14)Inert Pair Effect

The stability of dihalides of Si, Ge, Sn and Pb increases steadily in the sequence

A.PbX2 < SnX2 < GeX2 < SiX2

B.GeX2 < SiX2 < SnX2 < PbX2

C.SiX2 < GeX2 < PbX2 < SnX2

D.SiX2 < GeX2 < SnX2 < PbX2.✓ Correct

Explanation

The bottom elements of group 14 show the inert pair effect. Due to this inert pair effect, the oxidation state of the bottom elements reduces by 2. Therefore, the bottom elements show a stable +2 oxidation state. In the case of dihalides, the oxidation states of the group 14 elements are +2. Therefore, considering the inert pair effect the order of stability is, 2 2 2 2 SiX GeX SnX PbX < < <

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