An ionic bond A+ B– is most likely to be formed when :

Chemistry Chemical Bonding and Molecular Structure General Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 14, 2026

The ionization energy of A is high and the electron affinity of B is low

The ionization energy of A is low and the electron affinity of B is high

The ionization energy of A and the electron affinity of B is high

The ionization energy of A and the electron affinity of B is low

Text Solution

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The correct answer is:

The conditions required for the formation of an ionic bond.

(i) Ionization enthalpy [M(g) M+(g) + e–] of

electropositive element must be low.

(ii) Negative value of electron gain enthalpy [X (g) + e–

X–(g)] of electronegative element should be high.

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