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Classification of Elements and Periodicity in Properties
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26/08/2021 12:26 pm
Topic starter
Electron affinity is positive for
(a) O(g) + e- → O- (g)
(b) S(g) + e- → S-(g)
(c) O+(g) + e- → O(g)
(d) O-(g) + e- → O2-(g)
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26/08/2021 12:27 pm
Correct answer: (d) O-(g) + e- → O2-(g)
Explanation:
O- ion repel the incoming electron thus energy is required to add incoming electron.