Question

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. $O _{( g )}^{-}+ e ^{-} \rightarrow O _{ ( g ) }^{2-}$

Answer 1

Answer: (B)

$H _{( g )}+ e ^{-} \rightarrow H ^{-} $ is exothermic rest of all endothermic process.