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Polyatomic Ions
| symbol | ion |
|---|---|
| NH₄⁺ | ammonium |
| BrO₃⁻ | bromate |
| C₂H₃O₂- | acetate |
| ClO₄⁻ | perchlorate |
| ClO₃⁻ | chlorate |
| ClO₂⁻ | chlorite |
| ClO⁻ | hypochlorite |
| CN⁻ | cyanide |
| C₂O₄²⁻ | oxalate |
| CO₃²⁻ | carbonate |
| CrO₄²⁻ | chromate |
| Cr₂O₇²⁻ | dichromate |
| HCO₃⁻ | hydrogen carbonate |
| HSO₄⁻ | hydrogen sulfate |
| IO₃⁻ | iodate |
| MnO₄⁻ | permanganate |
| NO₃⁻ | nitrate |
| NO₂⁻ | nitrite |
| OH⁻ | hydroxide |
| O₂²⁻ | peroxide |
| SCN⁻ | thiocyanate |
| SO₄²⁻ | sulfate |
| SO₃²⁻ | sulfite |
| PO₄³⁻ | phosphate |
| PO₃³⁻ | phosphite |