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Polyatomic Ions
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| Formula | Name |
|---|---|
| NH4+ | ammonium |
| CH3COO-1 | acetate |
| OH-1 | hydroxide |
| ClO-1 | hypochlorite |
| ClO2-1 | chlorite |
| ClO3-1 | chlorate |
| ClO4 -1 | perchlorate |
| CN-1 | cyanide |
| HCO3-1 | hydrogen carbonate (bicarbonate) |
| HSO4-1 | hydrogen sulfate |
| MnO4-1 | permanganate |
| NO3-1 | nitrate |
| NO2-1 | Nitrite |
| SCN-1 | thiocyanate |
| O2-2 | peroxide |
| CO3-2 | carbonate |
| C2O4-2 | oxalate |
| CrO4-2 | chromate |
| Cr2O7-2 | dichromate |
| SO4-2 | sulfate |
| SO3-2 | sulfite |
| S-2 | sulfide |
| PO4-3 | phosphate |