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The correct sequence of increasing covalent character is represented by

1. (a) LiCl < NaCl < BeCl2
2. (b) BeCl2 < LiCl < NaCl
3. (c) NaCl < LiCl < BeCl2
4. (d) BeCl2 < NaCl < LiCl

Correct answer: (c) NaCl < LiCl < BeCl2

Solution

Covalent character increases with higher polarization, which depends on the cation's charge density. BeCl2 has the highest covalent character due to Be2+ being highly polarizing, followed by LiCl and then NaCl.

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