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Which is the following has the highest electron affinity and why??? F- ,O- ,O ,Na

Which is the following has the highest electron affinity and why???
F- ,O- ,O ,Na

Grade:12th pass

1 Answers

Arun
25750 Points
5 years ago
F neutral if on your list would be it but F- has already gotten its electron 
so eliminate that 

similarly O- compared to O has less affinity 


Na+ has a nobel gas config so not much incentive to add e- 


thus O which is pretty electronegative is your answer

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