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Polyatomic Ions
| Symbol | Name |
|---|---|
| NH4+ | Ammonium |
| H3O+ | Hydronium |
| C2H3O2- | Acetate |
| BrO3- | Bromate |
| ClO4- | Perchlorate |
| ClO3- | Chlorate |
| ClO2- | Chlorite |
| ClO- | Hypochlorate |
| CN- | Cyanide |
| H2PO4- | Dihydrogen Phosphate |
| HCO3- | Hydrogen Carbonate (bicarbonate) |
| HSO4- | Hydrogen Sulfate (bisulfate) |
| HSO3- | Hydrogen Sulfite (bisulfite) |
| OH- | Hydroxide |
| IO3- | Iodate |
| NO3- | Nitrate |
| NO2- | Nitrite |
| MnO4- | Permanganate |
| SCN- | Thiocyanate |
| CO3(-2) | Carbonate |
| Cr2O7(-2) | Dichromate |
| CrO4(-2) | Chromate |
| C2O3(-2) | Oxalate |
| SeO4(-2) | Selenate |
| SiO3(-2) | Silicate |
| SO4(-2) | Sulfate |
| SO3(-2) | Sulfite |
| O2(-2) | Peroxide |
| PO4(-3) | Phosphate |
| PO3(-3) | Phosphite |