vii. The stability of dihalides of ` Si, Ge , Sn` and Pb increases steadily in the sequence :

Options

A. `PbX_(2) lt lt SnX_(2) lt lt GeX_(2) lt lt SiX_(2)`
B. `GeX_(2) lt lt SiX_(2) lt lt SnX_(2) lt lt PbX_(2)`
C. `SiX_(2) lt lt GeX_(2) lt lt PbX_(2) lt lt SnX_(2)`
D. `SiX_(2) lt lt GeX_(2) lt lt SaX_(2) lt lt PbX_(2)`

Answer

D

Explanation

Inert pair effect becomes more predominant down the group and hence the stability of dihalides increases down the group, i.e, option (d) is correct.