The process that is $NOT$ endothermic in nature is :-
- A$Ar_{(g)} + e^{-} \rightarrow Ar_{(g)}^{-}$
- B$H_{(g)} + e^{-} \rightarrow H_{(g)}^{-}$
- C$Na_{(g)} \rightarrow Na_{(g)}^{+} + e^{-}$
- D$O_{(g)}^{-} + e^{-} \rightarrow O_{(g)}^{2-}$
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Similar Questions
The electron affinities of halogens are $F = 322, Cl = 349, Br = 324, I = 295 \ kJ \ mol^{-1}$. The higher value for $Cl$ as compared to that of $F$ is due to :-
Medium
View SolutionThe electron affinity of $Be$ is similar to :-
Medium
View SolutionWould you expect the second electron gain enthalpy of $O$ to be positive,more negative,or less negative than the first? Justify your answer.
Medium
View SolutionAssertion $(A)$: Fluorine has a smaller negative electron gain enthalpy than chlorine.
Reason $(R)$: The electron-electron repulsion is higher in chlorine than in fluorine.
Reason $(R)$: The electron-electron repulsion is higher in chlorine than in fluorine.
The correct order of electron affinity is:
Medium
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