Question

The process which involves absorption of energy is:

• A. $H^{+}+e^{-}\to H$
• B. $O^{-}+e^{-}\to O^{2-}$
• C. $C+e^{-}\to C^{-}$
• D. $S+e\to S^{-}$

Answer 1

The correct option is A $H^{+}+e^{-}\to H$

(A) $H^{+}+e^{-}\to H$

It involves absorption of energy because on $H^{+}$ion, adding the electron absorbs the energy and hence gives H as product.