Final answer:
The compound Mo3N4 is named molybdenum(IV) nitride, reflecting the +4 oxidation state of molybdenum and the 'ide' suffix for the nitrogen anion.
Step-by-step explanation:
The name of the compound with the formula Mo3N4 is called molybdenum(IV) nitride. In this compound, molybdenum acts as a metal cation with a +4 oxidation state, while nitrogen acts as a non-metal anion. When naming binary compounds containing only monatomic ions, the cation (metal) is named first, with its oxidation state in parentheses if it can have more than one, followed by the anion (non-metal) with the ending replaced by 'ide'.