The compound CRPO4 is known as Chromium(IV) phosphate.
In this compound, chromium has an oxidation state of +4, which is indicated by the Roman numeral IV in the name. Phosphate, on the other hand, is a polyatomic ion represented by PO4 with a charge of -3. In the naming convention, the cation (in this case, chromium) comes first, followed by the anion (phosphate). Therefore, when naming the compound, we combine the names to reflect both components, resulting in Chromium(IV) phosphate.