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Chemistry Question on GROUP 14 ELEMENTS

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

A

GeX2<<SiX2<<SnX2<<PbX2GeX_2 << SiX_2 << SnX_2 << PbX_2

B

SiX2<<GeX2<<PbX<<SnX2SiX_2 << GeX_2 << PbX << SnX_2

C

SiX2<<GeX2<<SnX2<<PbX2SiX_2 << GeX_2 << SnX_2 << PbX_2

D

PbX2<<SnX2<<GeX2<<SiX2PbX_2 << SnX_2 << GeX_2 << SiX_2

Answer

SiX2<<GeX2<<SnX2<<PbX2SiX_2 << GeX_2 << SnX_2 << PbX_2

Explanation

Solution

Due to inert pair effect, the stability of +2+2 oxidation state increases as we move down this group. ?SiX2<<GeX2<<SnX2<<PbX2?SiX_2 << GeX_2 << SnX_2 << PbX_2 Hence, (3) is correct.