What is the name of the ionic compound with the formula Na3PO4?

The ionic compound with the formula Na₃PO₄ is named sodium phosphate.

Sodium phosphate is made up of sodium ions (Na⁺) and phosphate ions (PO₄^3-). Each sodium ion carries a positive charge, and there are three sodium ions in the compound to balance the negative charge of one phosphate ion. This results in a neutral compound overall. Sodium phosphate is commonly used in various applications, including food additives, fertilizers, and as a buffering agent in biochemistry.