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Chemistry Chemical Bonding and Molecular Structure Electrovalent Bonding Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 12, 2026

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

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 are :

(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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