3.3: Formulas for Ionic Compounds - Chemistry LibreTexts
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WebSep 15, 2022 · For (b), NH 4 has a charge of +1 and PO 4 has a charge of 3-, so by crossing charges the formula is (NH 4) 3 PO 4. Example \(\PageIndex{2}\) Write the chemical formula for an ionic compound composed of each pair of ions.
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