Which of the following element has lowest electron affinity ?
Correct answer: D. He
- A. N
- B. CI
- C. O
- D. He
Explanation
He belongs to group 8A and has a stable electronic configuration.Electron affinity is inversely proportional to the stability of electronic configuration.He has complete octet and is not inclined to gain anymore electrons ,therefore it has least electron affinity among all the other options.
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