By losing its outermost electron (e~), a sodium atom becomes a Na+ ion. By gaining one electron, a chlorine atom becomes a Cl" ion. Because of their opposite charges, the Na+ and Cl" ions are attracted to each other and form an ionic bond.
^^ A Na atom loses an Both atoms are now ^^ The ions are attracted electron to a CI atom. stable, but carry a charge to one another to and become ions. form an ionic bond.
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