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Polyatomic Ions
| Formula | Name |
|---|---|
| OH 1- | hydroxide |
| SCN 1- | thiocyanate |
| CN 1- | cyanide |
| ClO4 1- | perchlorate |
| ClO3 1- | chlorate |
| ClO2 1- | chlorite |
| ClO 1- | hypochlorite |
| FO4 1- | perfluorate |
| FO3 1- | fluorate |
| FO2 1- | fluorite |
| FO 1- | hypofluorite |
| BrO4 1- | perbromate |
| BrO3 1- | bromate |
| BrO2 1- | bromite |
| BrO 1- | hypobromite |
| IO4 1- | periodate |
| IO3 1- | iodate |
| IO2 1- | iodite |
| IO 1- | hypoiodite |
| MnO4 1- | permangonate |
| NO3 1- | nitrate |
| NO2 1- | nitrite |
| SO4 2- | sulfate |
| SO3 2- | sulfite |
| HSO4 1- | hydrogen sulfate |
| HSO3 1- | hydrogen sulfite |
| CO3 2- | carbonate |
| HCO3 1- | hydrogen carbonate |
| PO4 3- | phosphate |
| PO3 3- | phosphite |
| H2PO4 1- | dihydrogen phosphate |
| HPO4 2- | hydrogen phosphate (biphosphate) |
| CrO4 2- | chromate |
| Cr2O7 2- | dichromate |
| O2 2- | peroxide |
| C2H3O2 1- | acetate |
| C2O4 2- | oxalate |
| C4H4O6 2- | tartrate |
| NH4 1+ | ammonium |
| H3O 1+ | hydronium |