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.

JEE Main 2022 — Chemistry Inorganic Chemistry

2022mcqmedium

Arrange the following in increasing order of their covalent character.

(A) ${\mathrm{CaF}}_{2}$

(B) ${\mathrm{CaCl}}_{2}$

(D) ${\mathrm{CaI}}_{2}$

Choose the correct answer from the options given below.

Official previous-year question

Held on 26 Jul 2022 · Verified 6 Jul 2026.

Options

A
$B<A<C<D$
B
$A<B<C<D$
C
$A<B<D<C$
D
$A<C<B<D$

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Solution

Cation is same in all case while anions are different.

According to Fajan's rule, Larger the anion, less is the effective nuclear charge that holds the valence electron of the ion in place. Since the last electron is loosely bound in large anions, it can easily be polarised by a cation, thereby making the compound more covalent.

Hence, the larger the size of the anion, greater is the covalent character of the ionic bond.

${\mathrm{CaF}}_{2}<{\mathrm{CaCl}}_{2}<{\mathrm{CaBr}}_{2}<{\mathrm{CaI}}_{2}$

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Solution

Cation is same in all case while anions are different.

Hence, the larger the size of the anion, greater is the covalent character of the ionic bond.

${\mathrm{CaF}}_{2}<{\mathrm{CaCl}}_{2}<{\mathrm{CaBr}}_{2}<{\mathrm{CaI}}_{2}$

JEE Main 2022 — Chemistry Inorganic Chemistry

Options

Did you get this right?

Solution

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JEE Main Inorganic Chemistry in other years

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JEE Main 2022 — Chemistry Inorganic Chemistry

Options

Did you get this right?

Solution

Your note

JEE Main Inorganic Chemistry in other years

More JEE Main Inorganic Chemistry questions

Other Chemistry topics for JEE Main

Physical Chemistry

Organic Chemistry

Keep practicing Inorganic Chemistry