what should the iupac name for a binary covalent compound lack?\no prefixes\no roman numerals\no an -ide…

Brief Explanations:

In naming binary covalent compounds, prefixes are used to indicate the number of atoms of each element, the name ends with -ide, and the names of non - metals are included. Roman numerals are used in naming ionic compounds with transition metals to indicate the oxidation state, not in binary covalent compounds.

Answer:

B. Roman numerals