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Polyatomic Ions
| Term | Definition |
|---|---|
| Ammonium | +1 NH^4 |
| Nitrite | -1 NO^2 |
| Nitrate | -1 NO^3 |
| Hydroxide | -1 OH |
| Bicarbonate | -1 HCO^3 |
| Acetate | -1 CH^3COO or C^2H^3O^2 |
| Perchlorate | -1 ClO^4 |
| Chlorate | -1 ClO^3 |
| Chlorite | -1 ClO^2 |
| Hypochlorite | -1 ClO |
| Permanganate | -1 MnO^4 |
| Cyanide | -1 CN |
| Carbonate | -2 CO^3 |
| Dichromate | -2 Cr^2O^7 |
| Chromate | -2 CrO^4 |
| Sulfite | -2 SO^3 |
| Sulfate | -2 SO^4 |
| Peroxide | -2 O^2 |
| Phosphite | -3 PO^3 |
| Phosphate | -3 PO^4 |