Polyatomic Ions

Pain

Ammonium

Ammonium

NH4+

Hydronium

H3O+

Acetate

C2H3O2-

Azide

N3-

Bromate

BrO3-

Bromite

BrO2-

Chlorate

ClO3-

Chlorite

ClO2-

Cyanate

OCN-

Cyanide

CN-

hydrogen carbonate (bicarbonate)

HCO3-

hydrogen sulfate (bisulfate)

HSO4-

Hydrogen sulfite (bisulfite)

HSO3-

Hydroxide

OH-

Hypochlorite

ClO-

Iodate

IO3-

Iodite

IO2-

Nitrate

NO3-

Nitrite

NO2-

Monobasic Phosphate (Dihydrogen Phosphate)

H2PO4-

Perchlorate

ClO4-

Permanganate

MnO4-

Thiocyanate

SCN-

Triiodide

I3-

carbonate

CO3 -2

Chromate

CrO4 -2

Dichromate

Cr2O7 -2

dibasic phosphate (hydrogen phosphate)

HPO4 -2

Metasilicate

SiO3 -2

Oxalate

C2O4 -2

Peroxide

O2 -2

Sulfate

SO4 -2

sulfite

SO3 -2

Thiosulfate

S2O3 -2

Aluminate

AlO3 -3

Arsenate

AsO4 -3

Arsenite

AsO3 -3

Borate

BO3 -3

Citrate

C6H5O7 -3

Phosphate

PO4 -3

Phosphite

PO3 -3

Silicate

SiO4 -4