* Balancing Charges: Ammonium ions have a +1 charge (NH₄⁺), while phosphate ions have a -3 charge (PO₄³⁻). To form a neutral compound, we need three ammonium ions to balance out the charge of one phosphate ion.
* Writing the Formula: We place the ammonium ion (NH₄⁺) in parentheses and write a subscript of 3 to indicate three ammonium ions, followed by the phosphate ion (PO₄³⁻). This results in the formula (NH₄)₃PO₄.
Therefore, the compound formed is ammonium phosphate, with the chemical formula (NH₄)₃PO₄.
