Question

in the stock system, how is the charge of the cation indicated? by a suffix after the name by a prefix before the name by changing the elements name by a roman numeral after the name

Explanation:

In the Stock system of naming cations, the charge of the cation is indicated by a Roman numeral after the element's name. For example, iron(II) indicates an iron cation with a +2 charge and iron(III) indicates an iron cation with a +3 charge.

Answer:

D. By a Roman numeral after the name