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Polyatomic ions
| Formula | Name |
|---|---|
| Li + | Lithium |
| Na + | Sodium |
| K + | Potassium |
| Rb + | Rubidium |
| Cs + | Cesium |
| Be 2+ | Beryllium |
| Mg 2+ | Magnesium |
| Ca 2+ | Calcium |
| Ba 2+ | Barium |
| Sr 2+ | Strontium |
| Al 3+ | Aluminum |
| H - | Hydride |
| F - | Fluoride |
| Cl - | Chloride |
| Br - | Bromide |
| I - | Iodide |
| O 2- | Oxide |
| S 2- | Sulfide |
| Se 2- | Selenide |
| N 3- | Nitride |
| P 3- | Phosphide |
| As 3- | Arsenide |
| Fe 3+ | Iron(III) |
| Fe 2+ | Iron(II) |
| Cu 2+ | Copper(II) |
| Cu + | Copper(I) |
| Co 3+ | Cobalt(III) |
| Co 2+ | Cobalt(II) |
| Sn 4+ | Tin(IV) |
| Sn 2+ | Tin(II) |
| Pb 4+ | Lead(IV) |
| Pb 2+ | Lead(II) |
| Hg 2+ | Mercury(II) |
| Ag + | Silver |
| Zn 2+ | Zinc |
| Hg2 2+ | Mercury(I) |
| NH4 + | Ammonium |
| NO2 - | Nitrite |
| NO3 - | Nitrate |
| SO3 2- | Sulfite |
| SO4 2- | Sulfate |
| HSO4 - | Hydrogen sulfate (bisulfate) |
| OH - | Hydoxide |
| CN - | Cyanide |
| PO4 3- | Phosphate |
| HPO4 2- | Hydrogen phosphate |
| H2PO4 - | Dihydrogen phosphate |
| NCS - | Thiocyanate |
| CO3 2- | Carbonate |
| HCO3 - | Hydrogen carbonate (bicarbonate) |
| ClO - | Hypochlorite |
| ClO2 - | Chlorite |
| ClO3 - | Chlorate |
| ClO4 - | Perchlorate |
| BrO - | Hypobromite |
| BrO2 - | Bromite |
| BrO3 - | Bromate |
| BrO4 - | Perbromate |
| IO - | Hypoiodite |
| IO2 - | Iodite |
| IO3 - | Iodate |
| IO4 - | Periodate |
| C2H3O2 - | Acetate |
| MnO4 - | Permanganate |
| Cr2O7 2- | Dichromate |
| CrO4 2- | Chromate |
| O2 2- | Peroxide |
| C2O4 2- | Oxalate |
| NH2 - | Amide |
| BO3 3- | Borate |
| S2O3 2- | Thiosulfate |
| H + | Hydrogen |