Final answer:
NaF is sodium fluoride, an ionic compound composed of sodium cations and fluoride anions.
Step-by-step explanation:
The compound NaF is called sodium fluoride. It is an ionic compound composed of sodium cations (Na+) and fluoride anions (F-). In the compound, sodium loses an electron and becomes positively charged, while fluoride gains an electron and becomes negatively charged. These ions are then attracted to each other, forming an ionic bond.