Published by:
CGP EDU Academic Team
Published on: August 13, 2026
Which one of the following, among each pairs, will release maximum energy on gaining one electron? 
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
Despite 
being more electronegative than 
, due to the small size of 
would have a more negative value of electron gain enthalpy because of inter-electronic repulsions.
As we go down group, the negative electron gain enthalpy decreases.
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