Final answer:
The correct name for the compound CaF2 is calcium fluoride, following the naming conventions of ionic compounds where the metal retains its name and the non-metal's ending changes to '-ide'.
Step-by-step explanation:
The correct name for the compound CaF2 is calcium fluoride. When naming ionic compounds like CaF2, the metal (calcium) keeps its name, and the non-metal (fluorine) has its ending changed to ‘-ide’. Therefore, the name becomes calcium fluoride. This corresponds to option B. “calcium fluoride.” Based on the rules of naming ionic compounds, we do not use prefixes like “mono-” or “di-” for the metal ion. We also do not need to specify the charge on the calcium ion because calcium forms only one cation with a characteristic charge of 2+.