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The first ionisation potential of Na is ...

The first ionisation potential of `Na` is `5.1eV`. The value of electron gain enthalpy of `Na^(+)` will be

A

`+2.55 eV`

B

`+10.2 eV`

C

`-5.1 eV`

D

`-10.2` eV

Text Solution

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The correct Answer is:
C
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