The correct order of covalent bond character | vedclass

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Question

(A) According to Fajan's rule,the covalent character of an ionic bond increases with:$1$. Smaller size of the cation.$2$. Higher charge on the cation.

Vedclass · Accepted Answer

$LiCl < BeCl_2 < BCl_3 < CCl_4$

Vedclass · Answer

(A) According to Fajan's rule,the covalent character of an ionic bond increases with:$1$. Smaller size of the cation.$2$. Higher charge on the cation.Comparing the cations $Li^{+}$,$Be^{2+}$,$B^{3+}$,and $C^{4+}$:- The charge increases in the order: $Li^{+} - The ionic radius decreases in the order: $Li^{+} > Be^{2+} > B^{3+} > C^{4+}$.Both factors favor increased polarization of the anion by the cation as we move from $LiCl$ to $CCl_4$.Therefore,the covalent character increases in the order: $LiCl < BeCl_2 < BCl_3 < CCl_4$.

The correct order of covalent bond character of $BCl_3, CCl_4, BeCl_2, LiCl$ is

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