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The process requiring absorption of ener...

The process requiring absorption of energy is

A

` F to F^(-)`

B

`Cl to Cl^(-)`

C

`O^(-) to O^(-2)`

D

`H to H^(-)`

Text Solution

Verified by Experts

The correct Answer is:
C
The addition of an extra electron to `O^(-)` requires addition of energy because of the coulombic repulsion offered by the extra electron to the incoming electron. For other processes, energy is evolved. As far, all of them, EA is positive.
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