Chromium can form either a 2 plus or a 3 plus ion. What is the Stock name for the chromium ion with the 3 plus charge?

The Stock name for the chromium ion with a 3 plus charge is chromium(III). In this naming system, the Roman numeral indicates the oxidation state of the metal ion. Thus, chromium(III) signifies that chromium has lost three electrons to form the ion.