Arrange the following in increasing order of their covalent character.
A. $\mathrm{CaF}_{2}$
B. $\mathrm{CaCl}_{2}$
C. $\mathrm{CaBr}_{2}$
D. $\mathrm{CaI}_{2}$
Choose the correct answer from the options given below.
Solution
From Fajan's rule, for a given metal ion, as the size of anion increases, polarizability of anion increases and hence covalent character of the given ionic compound increases.
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Hence, the increasing order of covalent character is $\mathrm{CaF}_{2}<\mathrm{CaCl}_{2}<\mathrm{CaBr}_{2}<\mathrm{Cal}_{2}$
About this question
Subject: Chemistry · Chapter: Chemical Bonding and Molecular Structure · Topic: Ionic and Covalent Bonding
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