What is the chemical name for MgNH₄PO₄?

The chemical name for MgNH₄PO₄ is Magnesium Ammonium Phosphate. This name accurately reflects the components of the compound: it consists of magnesium (Mg), ammonium (NH₄), and phosphate (PO₄) ions. Each of these ions contributes to the overall structure of the compound.

In this formula, magnesium serves as the metal component, while ammonium, which is a positively charged ion (cation), can pair with various negatively charged ions (anions) such as phosphate. The phosphate group, composed of phosphorus and oxygen, is a common anion in many biochemical contexts.

The correct designation of the compound as Magnesium Ammonium Phosphate highlights the specific metal cation associated with the ammonium and phosphate, distinguishing it from other potential combinations that might include sodium, calcium, or potassium. Each of those alternatives refers to different compounds that incorporate different cations, which is why they are not suitable names for MgNH₄PO₄.