Question

which prefix would appear in the iupac name for a covalent compound that has four atoms of a single element?
tri-
di-
tetra-
mono-

Explanation:

In IUPAC naming for covalent compounds, prefixes indicate the number of atoms of an element. "tetra-" is the prefix used to denote four atoms of a single element, while "tri-" = 3, "di-" = 2, and "mono-" = 1.

Answer:

tetra-