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Polyatomic Ions
| Term | Definition |
|---|---|
| Chromate | CrO4-2 |
| Carbonate | CO3-2 |
| Sulfate | So4-2 |
| Phosphate | PO4-3 |
| Nitrate | NO3-1 |
| Chlorate | ClO3-1 |
| Bromate | BrO3-1 |
| Iodate | IO3-1 |
| Acetate | C2H3O2/CH3COO-1 |
| Oxalate | C2O4-2 |
| Peroxide | O2-2 |
| Hydroxide | OH-1 |
| Hydronium | H3O+1 |
| Dichromate | Cr2O7-2 |
| Hydrogen Carbonate/Bicarbonate | HCO3-1 |
| Hydrogen Sulfate/Bisulfate | HSO4-1 |
| Sulfite | SO3-2 |
| Phsophite | PO3-3 |
| Nitrite | NO2-1 |
| Chlorite | ClO2-1 |
| Hypochlorite | Clo-1/OCl-1 |
| Perchlorate | ClO4-1 |
| Periodate | IO4-1 |
| Cyanide | CN-1 |
| Permanganate | MnO4-1 |
| Ammonium | NH+1 |