Polyatomic Ions

Bicarbonate

HCO₃⁻

Bisulfate

HSO₄⁻

Bromate

BrO₃⁻

Nitrite

NO₂⁻

Acetate

C₂H₃O₂⁻

Perchlorate

ClO₄⁻

Chlorite

ClO₂⁻

Dihydrogen Phosphate

H₂PO₄⁻

Permanganate

MnO₄⁻

Bisulfite

HSO₃⁻

Nitrate

NO₃⁻

Hydroxide

OH⁻

Cyanide

CN⁻

Chlorate

ClO₃⁻

Hypochlorite

ClO⁻

Thiocyanate

SCN⁻

Carbonate

CO₃²⁻

Chromate

CrO₄⁻²

Dichromate

Cr₂O₇⁻²

Hydrogen Phosphate

HPO₄⁻²

Thiosulfate

S₂O₃⁻²

Sulfate

SO₄⁻²

Sulfite

SO₃⁻²

Oxalate

C₂O₄⁻²

Peroxide

O₂⁻²

Phosphate

PO₄⁻³

Borate

BO₃⁻³

Phosphite

PO₃³⁻

Arsenate

AsO₄⁻³

Ammonium

NH₄⁺

Hydronium

H₃O⁺

Mercury(I)

Hg₂⁺²