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Polyatomic Ions
| Term | Definition |
|---|---|
| Ammonium | (NH4)+ |
| Nitrite | (NO2)- |
| Nitrate | (NO3)- |
| Sulfite | (SO3)2- |
| Sulfate | (SO4)2- |
| Hydroxide | OH- |
| Cyanide | CN- |
| Phosphate | (PO4)3- |
| Carbonate | (CO3)2- |
| Hydrogen carbonate/bicarbonate | (HCO3)- |
| Acetate | (C2H3O2)- |
| Permanganate | (MnO4)- |
| Dichromate | (Cr2O7)2- |
| Chromate | (CrO4)2- |