vii. The stability of dihalides of Si, ...

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

A

`GeX_2 le SiXe le SnX_2 le PbX_2`

B

`SiX_2 le GeX_2 le PbX_2 le SnX_2 `

C

`SiX_2 le GeX_2 le SnX_2 le PbX_2`

D

`PbX_2 le SnX_2 le GeX_2 le SiX_2`

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The correct Answer is:

C

Due to inert pair effect, the stability of +2 oxidation state increases as we move down this group.
`therefore SiX_2 le GeX_2 le Sn X_2 le PbX_2`

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