The correct order of electron affinity is :
Show Hint
- F > Cl > O
- F > O > Cl
- Cl > F > O
- O > F > Cl
The Correct Option is C
Solution and Explanation
Cl is higher than F because in the compact 2p subshell of F the added electron suffers strong repulsion from the existing electrons; the larger 3p subshell of Cl accommodates it better.
O has a lower nuclear charge than F, so its electron affinity is the lowest of the three.
Order: Cl > F > O.
Answer: (3) Cl > F > O
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