Question

which prefix is needed when naming so₃? tri- penta- mono- di-

Explanation:

In naming covalent compounds, prefixes are used to indicate the number of atoms of each element. For \(SO_3\), the subscript of oxygen (\(O\)) is \(3\). The prefix for the number \(3\) in chemical nomenclature is "tri -". For example, in \(CO_2\) (carbon dioxide), "di -" is used for \(2\) oxygen atoms. "Mono -" is for \(1\) (e.g., \(CO\) - carbon monoxide), and "penta -" is for \(5\).

Answer:

tri -