Final answer:
CuBr2 is named copper(II) bromide, indicating the +2 charge of copper, SCl2 is named sulfur dichloride, using the prefix 'di-' for the two chlorine atoms, and BaF2 is named barium fluoride, omitting the prefix 'di-' due to barium's consistent charge.
Step-by-step explanation:
The compounds CuBr2, SCl2, and BaF2 are named using a combination of standard nomenclature rules in chemistry. For compounds with metals that can have multiple charges, such as copper, the charge is indicated using a Roman numeral in parentheses. This explains the name copper(II) bromide for CuBr2, where II indicates the copper ion has a +2 charge. Similarly, for the compound SCl2, consisting of nonmetals, we use the prefix 'di-' to indicate the two chlorine atoms, naming it sulfur dichloride. Lastly, BaF2 is named barium fluoride, where we omit the prefix 'di-' because barium forms ions with a consistent charge, and the formula implies that there are two fluoride ions for each barium ion.