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Polyatomic Ions

NameFormula
Ammonium (NH₄)+
Hydronium (H₃O)+
Acetate (C₂H₃O₂)-
Acetate* (CH₃COO)-
Hydroxide (OH)-
Cyanide (CN)-
Permanganate (MnO₄)-
Hypochlorite (ClO)-
Chlorite (ClO₂)-
Chlorate (ClO₃)-
Perchlorate (ClO₄)-
Hydrogen Carbonate (bicarbonate) (HCO₃)-
Bromate (BrO₃)-
Carbonate (CO₃)²-
Dichromate (Cr₂O₇)²-
Oxalate (C₂O₄)²-
Peroxide (O₂)²-
Sulfate (SO₄)²-
Sulfite (SO₃)²-
Hydrogen Phosphate (HPO₄)²-
Chromate (CrO₄)²-
Silicate (SiO₃)²-
Nitrate (NO₃)-
Nitrite (NO₂)-
Dihydrogen Phosphate (H₂PO₄)-
Iodate (IO₃)-
Hydrogen Sulfate (bisulfate) (HSO₄)-
Hydrogen Sulfite (bisulfite) (HSO₃)-
Phosphate (PO₄)³-
Phosphite (PO₃)³-
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