Polyatomic Ions

CH3CO2 1-

CH3CO2 1-

Acetate

NH4 1+

Ammonium

AsO4 3-

Arsenate

C6H5COO 1-

Benzoate

HCO3 1-

Bicarbonate

BrO3 1-

Bromate

BrO2 1-

Bromite

CO3 2-

Carbonate

ClO3 1-

Chlorate

ClO2 1-

Chlorite

CrO4

Chromate

C6H5O7 3-

Citrate

OCN 1-

Cyanate

CN 1-

Cyanide

Cr2O7 2-

Chromate

H2PO4 1-

Dihydrogen Phosphate

HCO2 1-

Formate

Fe(CN)6 2-

Hexacyanoferrate II

Fe(Cn)6 3-

Hexacyanoferrate III

HCO3 1-

hydrogen carbonate/bicarbonate

HSO4 1-

Hydrogen sulfate/bisulfate

HPO4 2-

Hydrogen Phosphate

OH 1-

Hydroxide

ClO 1-

Hypochlorite

IO3 1-

Iodate

NO3 1-

Nitrate

NO2 1-

Nitrite

C2O4 2-

Oxalate

ClO4 1-

Perchlorate

IO4 1-

Periodate

MnO4 1-

Permanganate

O2 2-

Peroxide

PO4 3-

Phosphate

PO3 3-

Phosphite

SeO4 2-

Selenate

SiO3 2-

Silicate

SO4 2-

Sulfate

SO3 2-

Sulfite

TeO4 2-

Tellurate

TeO3 2-

Tellurite

B4O7 2-

Tetraborate

SCN 1-

Thiocyanate

S2O3 2-

Thiosulfate