Question

The correct sequence of increasing covalent character is
represented by
(a) LiCl < NaCl < BeCl₂ (b) BeCl₂ < LiCl < NaCl
(c) NaCl < LiCl < BeCl₂ (d) BeCl₂ < NaCl < LiCl

Answer 1

Explanation:

The correct sequence of increasing covalent character is

represented by the form in option a) LiCl < NaCl < BeCl₂

Answer 2

LiCl < NaCl < BeCl₂  is the correct sequence.

Explanation:

• The covalency of the bond character is dependent on the difference in the electronegativity of the participating atoms.

• In the given options, the cations are the lithium, sodium and beryllium.

• If we look at their electronegativy, the most electronegative is beryllium and least is lithium.

• The participating anion is chloride in all the cases.

• The lesser the electronegativity difference, the more is the covalent character.

• So the most covalent compound is beryllium chloride and least is lithium chloride.

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