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Q.

Which of the following processes is endoergic in nature?

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a

$O^{-} + e \to O^{2 -}$

b

$Cl + e \to {Cl}^{-}$

c

$F + e \to F^{-}$

d

$S + e \to S^{-}$

answer is A.

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Detailed Solution

An endothermic reaction is one that necessitates the input of energy to occur. The process,

$O^{-} + e \to O^{2 -}$

It is an endothermic process (requires addition of energy to make it happen).

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