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Doctors Medicines MCQs Q&A

Electron affinity is positive when
A. `O^(-)` is formed from O
B. `O^(2-)` is formed from `O^(-)`
C. `O^(+)` is formed from O
D. `O^(3-)` is formed from `O^(-)`

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1 Answers

Correct Answer - B
`O_((g))^(-)+e^(-) to O_(g)^(2-)+E,(DeltaH=ve, "Endothermic").`

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