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Polyatomic Ions
| Term | Definition |
|---|---|
| NH₄⁺ | Ammonium |
| H₃O⁺ | Hydronium |
| SO₄²⁻ | Sulfate |
| SO₃²⁻ | Sulfite |
| NO₃⁻ | Nitrate |
| NO₂⁻ | Nitrite |
| PO₄³⁻ | Phosphate |
| PO₃³⁻ | Phosphite |
| CO₃²⁻ | Carbonate |
| HCO₃⁻ | Hydrogen carbonate (bicarbonate) |
| OH⁻ | Hydroxide |
| CN⁻ | Cyanide |
| C₂H₃O₂⁻ | Acetate |
| MnO₄⁻ | Permanganate |
| ClO₄⁻ | Perchlorate |
| ClO₃⁻ | Chlorate |
| ClO₂⁻ | Chlorite |
| ClO⁻ | Hypochlorite |
| CrO₄²⁻ | Chromate |
| Cr₂O₇²⁻ | Dichromate |