The symbol in question, SBr₂, represents a chemical compound known as sulfur dibromide. In this compound, the ‘S’ stands for sulfur, while ‘Br’ stands for bromine. The subscript ‘2’ indicates that there are two bromine atoms bonded to one sulfur atom. This naming convention follows standard chemical nomenclature rules, where the first element retains its elemental name, and the second element’s name is modified to end in ‘-ide’ when it is a binary compound formed from two different elements. So, sulfur dibromide signifies that the compound is composed of one sulfur atom and two bromine atoms.