Published by:
CGP EDU Academic Team
Published on: August 12, 2026
The order of first electron affinity of O, S and Se is:
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
O has exceptionally smaller value of electron affinity 
due to smaller atomic size than sulphur (weaker electron-electron repulsion in 3p-subshell).
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