The name of the ionic compound (NH4)3PO4 is
Best Answer: The stock name for this compound is ammonium phosphate. This is an ionic compound, which means that it is named with the names of the ions. The cation (the first ion, positively charged) is NH4+, which is called ammonium. The anion (the second ion, negatively charged) is called phosphate, PO4(3-).Note that because the entire compound must be neutral, there are three ammonium (+) ions to balance out one 3- PO4 ion.Source(s):he cation (the first ion, positively charged) is NH4+, which is called ammonium. The anion (the second ion, negatively charged) is called phosphate, PO4(3-).