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Electron Gain Enthalpy

Question

In which process energy is release?
$B e \to B e^{-}$
$F \to F^{+}$
$N e \to N e^{-}$
$B \to B^{-}$

A

B e \to B e^{-}

B

N e \to N e^{-}

C

F \to F^{+}

D

B \to B^{-}

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Solution

Verified by Toppr

$_{5} B - 1 s^{2} 2 s^{2} 2 p^{1}$ (Refer to Image)
Energy is released as the $e^{-}$ is filled in an empty $p -$ orbital.

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