Question

Which element gains two electrons to fill its outermost energy level?

(1 point)
Responses

magnesium (Mg)
magnesium (Mg)

lithium (Li)
lithium (Li)

fluorine (F)
fluorine (F)

selenium (Se)

Answer 1

Fluorine (F) gains one electron to fill its outermost energy level, while selenium (Se) typically gains two electrons to achieve a stable octet in its outermost energy level. Therefore, the correct response is:

**selenium (Se)**