The chemical formula for zinc phosphate is Zn3(PO4)2, also written as O8P2Zn3. In this formula, "Zn" is the chemical symbol for zinc, "P" is the chemical symbol for phosphorous, and "O" is the chemical symbol for oxygen.
In the chemical formula Zn3(PO4)2, the "3" after the "Zn" indicates the presence of three zinc atoms. In "PO4," the chemical formula for phosphate, the "4" indicates the presence of four oxygen atoms for one atom of phosphorous. The "2" after the parenthesis in Zn3(PO4)2 shows that the number of atoms in "PO4" is doubled when the ion bonds with the three atoms of zinc to create zinc phosphate.