Question

the roman numeral written after the name of a transition metal tells

how many atoms of the transition metal are in the compound

the total positive charge of the compound

the charge on 1 atom of the transition metal in that particular compound

the transition metals atomic number

Explanation:

In naming ionic compounds with transition - metals, Roman numerals indicate the oxidation state of the transition - metal atom in the compound, which is equivalent to the charge on 1 atom of the transition metal in that particular compound.

Answer:

the charge on 1 atom of the transition metal in that particular compound