polyatomic ions

Ammonium

Ammonium

NH 4+ (Cation)

Dimercury (1)

Hg2 2+ (cation)

Hydronium

H3O + (cation)

Acetate

CH3COO - (anion)

Bromate

BrO 3- (anion)

Chlorate

ClO 3- (anion)

Chlorite

ClO2 - (anion)

Cynate

OCN - (anion)

Cyanide

CN- (anion)

Dihydrogen phosphate

H2PO4 -

Hydrogen Carbonate (bicarbonate)

HCO3 - (anion)

Hydrogen sulfate (bisulfate)

HSO4 - (anion)

Hydrogen sulfite (bisulfite)

HSO3 - (anion)

Hydroxide

OH - (anion)

Hypochlorite

ClO- (anion)

Iodate

IO3 - (anion)

Nitrate

NO3 -

Nitrite

NO2 - (anion)

Perchlorate

ClO4 - (anion)

Permanganate

MnO4 - (anion)

Thiocyanate

SCN - (anion)

Carbonate

CO3 2-

Chromate

CrO4 2-

Dichromate

Cr2O7 2-

Hydrogen Phosphate

HPO4 2-

Manganate

MnO4 2-

Oxalate

C2O4 2-

Peroxide

O2 2-

Selenate

SeO4 2-

Silicate

SiO3 2-

Sulfate

SO4 2-

Sulfite

SO3 2-

Tellurate

TeO4 2-

Thiosulfate

S2O3 2-

Arsenate

AsO4 3-

Phosphate

PO4 3-