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Question:

The correct order of catenation is:

Ge>Sn>Si>C

C>Si>Ge≈Sn

C>Sn>Si≈Ge

Si>Sn>C>Ge

Solution:

The correct option is A
C>Si>Ge≈Sn
Solution:- (A)C>Si>Ge≈Sn
As we move down the group, bond strength decreases, thereby decreasing the catenation tendency.
Hence the order is as expected :C>Si>Ge≈Sn