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Polyatomic Ions
| Term | Definition |
|---|---|
| Hydronium | H3O + |
| Ammonium | NH4 + |
| Acetate | CH3CO2 - |
| Carbonate | CO3 -2 |
| Hydrogen Carbonate (bicarbonate) | HCO3 - |
| Cyanide | CN - |
| Hydroxide | OH - |
| Nitrate | NO3 - |
| Nitrite | NO2 - |
| Phosphate | PO4 -3 |
| Hydrogen phosphate (biphosphate) | HPO4 -2 |
| Dihydrogen phosphate | H2PO4 - |
| Sulfate | SO4 -2 |
| Hydrogen Sulfate (bisulfate) | HSO4 - |
| Sulfite | SO3 -2 |
| Carbonate | CO2 -3 |