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A list, in alphabetical order, of the most common polyatomic ions, polyatomic anions, polyatomic cations, most common polyatomic ions, table of polyatomic ions, polyatomic anion list.
Download Polyatomic Ions Table
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(Alphabetical by Name)
Polyatomic ions A-C
| Acetate C2H3O2 1- or CH3COO 1- |
| Aluminate AlO3 3- |
| Amide NH2 1- |
| Ammonium NH4 1+ |
| Arsenate AsO4 3- |
| Azide N3 1- |
| Benzoate C6H5COO 1- |
| Borate BO3 3- |
| Bromate BrO3 1- |
| Bromite BrO2 1- |
| Carbide (saltlike) C2 2- |
| Carbonate CO3 2- |
| Chlorate ClO3 1- |
| Chlorite ClO2 1- |
| Chromate CrO4 2- |
| Citrate C6H5O7 3- |
| Cyanate OCN 1- |
| Cyanide CN 1- |
Polyatomic ions D-H
| Dichromate Cr2O7 2- |
| Dihydrogen Phosphate H2PO4 1- |
| Diphosphate (Pyrophospate) P2O7 4- |
| Ferricyanide Fe(CN)6 3- |
| Ferrocyanide Fe(CN)6 4- |
| Formate HCOO 1- |
| Hydride H 1- |
| *Hydrogen* H 1+ |
| Hydrogen Carbonate HCO3 1- |
| (Bicarbonate) |
| Hydrogen Oxalate HC2O4 1- |
| (Binoxalate) |
| Hydrogen Phosphate HPO4 2- |
| (Monohydrogen Phospate) |
| Hydrogen Sulfate HSO4 1- |
| (Bisulfate) |
| Hydrogen Sulfite HSO3 1- |
| (Bisulfite) |
| Hydrogen Sufide HS 1- |
| (Bisulfide or Hydrosulfide) |
| *Hydronium* H3O 1+ |
| Hydroxide OH 1- |
| Hypobromite BrO 1- |
| Hypochlorite ClO 1- |
| Hypoiodite IO 1- |
| Hypophosphite PO2 3- |
Polyatomic ions I-P
| Imide NH 2- |
| Iodate IO3 1- |
| Iodite IO2 1- |
| Manganate MnO4 2- |
| Metasilicate (chain) (SiO3 2-)x |
| Nitrate NO3 1- |
| Nitrite NO2 1- |
| Oxalate C2O4 2- |
| Perbromate BrO4 1- |
| Perchlorate ClO4 1- |
| Periodate IO4 1- |
| Permanganate MnO4 1- |
| Peroxide O2 2- |
| Peroxydisulfate S2O8 2- |
| Phosphate PO4 3- |
| Phosphite PO3 3- |
| Phthalate C8H4O4 2- |
| Polysulfide Sx 2- |
Polyatomic ions S-Z
| Selenate SeO4 2- |
| Silicate SiO4 4- |
| Sulfate SO4 2- |
| Sulfite SO3 2- |
| Tartrate C4H4O6 2- |
| Tellurate TeO4 2- |
| Tellurite TeO3 2- |
| Tetraborate B4O7 2- |
| Thiocyanate SCN 1- |
| Thiosulfate S2O3 2- |
| Triiodide I3 1- |
| Tripolyphospate P3O10 5- |
| Tungstate WO4 2- |
| Vandate VO3 1- |
| Zincate ZnO2 2- |
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