Arrange the following in the decreasing order of their covalent character : (A) LiCl (B) NaCl (C) KCl (D) CsCl Choose the most appropriate answer from the options given below

JEE Main 202229 JuneMorning Shift

Exam: JEE Main
Year: 2022
Date: 29 June
Shift: Morning Shift
Subject: Chemistry
Chapter: Chemical Bonding and Molecular Structure

JEE Main 2022 · 29 June · Morning Shift · Chemistry · Chemical Bonding and Molecular Structure

Arrange the following in the decreasing order of their covalent...

Arrange the following in the decreasing order of their covalent character :

(A) $LiCl$

(B) $NaCl$

(D) $CsCl$

Choose the most appropriate answer from the options given below

Options

A $\left(A\right) > \left(C\right) > \left(B\right) > \left(D\right)$
B $\left(B\right) > \left(A\right) > \left(C\right) > \left(D\right)$
C $\left(A\right) > \left(B\right) > \left(C\right) > \left(D\right)$
D $\left(A\right) > \left(B\right) > \left(D\right) > \left(C\right)$

Correct answer

C. $\left(A\right) > \left(B\right) > \left(C\right) > \left(D\right)$

Step-by-step solution

Lithium chloride is the alkali metal chloride which is most covalent in nature. This is due to the small size and high polarising power of lithium. That is, smaller the cation, greater is the polarising power and hence, greater is the covalent character.

So order of covalent character will be $CsCl < RbCl < NaCl < LiCl$

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