Final answer:
The compound with the formula Br₂S₃ is likely named dibromine trisulfide, which indicates that it consists of two bromine atoms and three sulfur atoms.
Step-by-step explanation:
The name of the compound Br₂S₃ is dibromide trioxide. However, this name is not standard and does not follow typical IUPAC naming conventions. Instead, a more likely correct name for a compound with this composition would be dibromine trisulfide, reflecting that it is a covalent compound made of Br₂ and S₃ units. In the naming of covalent compounds, prefixes are used to denote the number of atoms of each element present in the compound. For bromine (Br), the prefix 'di-' is used because there are two bromine atoms, and for sulfur (S), 'tri-' is used because there are three sulfur atoms.