Which element is most likely to gain an electron?

hydrogen

1

Elements that are metals tend to lose electrons and become positively charged ions called cations. Elements that are nonmetals tend to gain electrons and become negatively charged ions called anions. So, if you are asking would hydrogen most likely gain electrons the answer would be yes it would gain electrons.

F

Explanation:

Fluorine has the highest EN value. so F can receive electron the most when compare to other elements.