Sodium chloride (NaCl) is an ionic compound, meaning it's composed of positively charged ions (cations) and negatively charged ions (anions).

In one formula unit of NaCl, there is one sodium ion (Na+) and one chloride ion (Cl-).

It's important to remember that this is referring to the ratio of ions in the compound. The actual number of ions present will depend on the amount of NaCl you have.