MCQ
The process that is $NOT$ endothermic in nature is :-
- A$Ar _{( g )}+ e ^{-} \rightarrow Ar _{( g )}^{-}$
- ✓$H _{( g )}+ e ^{-} \rightarrow H _{( g )}^{-}$
- C$Na _{( g )} \rightarrow Na _{( g )}^{+}+ e ^{-}$
- D$O _{( g )}^{-}+ e ^{-} \rightarrow O _{( g )}^{2-}$
