Question

fluorine (f) is a nonmetal. it has a strong tendency to complete its outermost shell of electrons and form an ion. how will f form its ion?
a. it will gain one electron and form f-.
b. it will gain two electrons and form f2-.
c. it will lose one electron and form f+.
d. it will lose two electrons and form f2+.

Explanation:

Fluorine has 7 electrons in its outermost shell. It needs 1 more electron to complete its octet (8 - electron stable configuration). Non - metals gain electrons to form anions. So, it will gain one electron and form F⁻.

Answer:

A. It will gain one electron and form F⁻.