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Why does second electron affinity is usually taken as positive?

Why does second electron affinity is usually taken as positive?

Grade:12

1 Answers

harman
26 Points
5 years ago
bcz when we add one electron then we add it to a neutral molecule O2 but after addition of one electron O2 becomes O2- so when another electron electron is added there are repulsions between them so the value of EA becomes less negative

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