Final answer:
The compound name of CrS3 is chromium(III) sulfide.
Step-by-step explanation:
The compound name of CrS3 is chromium(III) sulfide.
When naming simple ionic compounds, we use the name of the cation followed by the name of the anion. In this case, the cation is chromium with a charge of +3, and the anion is sulfide. So, the compound name is chromium(III) sulfide.
Other examples of compound names are sodium chloride, aluminum oxide, iron(III) chloride, and copper(II) oxide.