Polyatomic Ions

CH₃COO^-

Acetate

AsO₄^3-

Arsenate

AsO₃^3-

Arsenite

C₆H₅COO^-

Benzoate

BO₃^3-

Borate

BrO₃^-

Bromate

CO₃^2-

Carbonate

ClO₃^-

Chlorate

ClO₂^-

Chlorite

CrO₄^2-

Chromate

CNO^-

Cyanate

CN^-

Cyanide

Cr₂O₇^2-

Dichromate

H₂PO₄^-

Dihydrogen Phosphate

HCO₃^-

Hydrogen Carbonate

HC₂O₄^-

Hydrogen Oxalate

HSO₄^-

Hydrogen Sulfate

HS^-

Hydrogen Sulfide

HSO₃^-

Hydrogen Sulfite

OH^-

Hydroxide

ClO^-

Hypochlorite

IO₃^-

Iodate

HPO₄^2-

Monohydrogen Phosphate

NO₃^-

Nitrate

NO₂^-

Nitrite

SiO₄^-4

Orthosilicate

C₂O₄^2-

Oxalate

ClO₄^-

Perchlorate

IO₄^-

Periodate

MnO₄^-

Permanganate

O₂^2-

Peroxide

PO₄^3-

Phosphate

P₂O₇^4-

Pyrophosphate

SO₄^2-

Sulfate

SO₃^2-

Sulfite

SCN^-

Thiocyanate

S₂O₃^2-

Thiosulfate

NH₄⁺

Ammonium

H₃O⁺

Hydronium

NH₃

Ammonia