Published by:
CGP EDU Academic Team
Published on: August 13, 2026
The formation of the oxide ion 
requires first an exothermic and then an endothermic step as shown below
This is because
A
ion will tend to resist the addition of another electron
B
Oxygen has high electron affinity
C
Oxygen is more electronegative
D
ion has comparatively larger size than oxygen atom
Text Solution
Verified by ExpertsThe correct answer is:
A
The addition of second electron in an atom or ion is always endothermic.
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