Question

question 7 points 3 which of the following uses roman numerals in their compounds? type i metal cation type ii metal cation monatomic anion polyatomic anion

Explanation:

Type I metal cations have a fixed charge, so they don't use Roman numerals. Type II metal cations can have multiple oxidation states, and when naming their compounds, Roman numerals are used to indicate the charge of the metal ion. Monatomic and polyatomic anions have specific naming conventions without Roman numerals for their charge indication in the same way as Type II cations.

Answer:

B. Type II metal cation