Polyatomic Ions +1 -1, Polyatomic Ions 2- 3-

Ammonium

Ammonium

NH₄⁺¹

Acetate

C₂H₃O₂⁻¹

Perchlorate

ClO₄⁻¹

Chlorate

ClO₃⁻¹

Chlorite

ClO₂⁻¹

Hypochlorite

ClO⁻¹

Cyanide

CN⁻¹

Hydrogen carbonate (bicarbonate)

HCO₃⁻¹

Dihydrogen Phosphate

H₂PO₄⁻¹

Hydrogen sulfate (bisulfate)

HSO₄⁻¹

Permanganate

MnO₄⁻¹

Nitrate

NO₃⁻¹

Nitrite

NO₂⁻¹

Hydroxide

OH⁻¹

Thiocyanate

SCN⁻¹

Carbonate

CO₃⁻²

Oxalate

C₂O₄⁻²

Chromate

CrO₄⁻²

Dichromate

Cr₂O₇⁻²

Hydrogen phosphate

HPO₄⁻²

Peroxide

O₂⁻²

Sulfate

SO₄⁻²

Sulfite

SO₃⁻²

Thiosulfate

S₂O₃⁻²

Phosphate

PO₄⁻³

Phosphite

PO₃⁻³