What is the correct name for compound Cr2O3?

Answer 1

For ionic compounds such as the one mentioned above, naming them is relatively easy. As we all know, an ionic compound consists of a metal ion(which is usually positive) and a negative ion.

Hence, the names for metallic compounds are always in the following format:

Name of metal + Name of negative ion

However, do take note that for transition metals, the oxidation state has to be included. This is because transition metals have multiple oxidation states. The oxidation state of the metal is presented by: Metal (oxidation number). For example, rust is Iron (III) oxide.

Cr2O3 is hence named chromium (III) oxide.

Answer 2

The correct name for the compound Cr2O3 is chromium(III) oxide.