In Order to Become an Ion,an Atom of Chlorine Must

Question

In order to become an ion,an atom of chlorine must _____.
A)gain an electron
B)form a covalent bond
C)lose an electron
D)form a hydrogen bond

Accepted Answer

Chlorine has 7 electrons in its outermost shell and needs one more electron to fill the shell and become stable. Therefore, it will gain an electron to become an ion with a negative charge.