Polyatomic Ions

Ammonium

NH4 1+

Acetate

C2H3O2 1-

Cyanide

CN 1-

Hypobromite

BrO 1-

Bromite

BrO2 1-

Bromate

BrO3 1-

Perbromate

BrO4 1-

Hypochlorite

ClO 1-

Chlorite

ClO2 1-

Chlorate

ClO3 1-

Perchlorate

ClO4 1-

Hypoiodite

IO 1-

Iodite

IO2 1-

Iodate

IO3 1-

Periodate

IO4 1-

Hydrogen Carbonate

HCO3 1-

Dihydrogen Phosphate

H2PO4 1-

Hydrogen Sulfate

HSO4 1-

Nitrite

NO2 1-

Nitrate

NO3 1-

Hydroxide

OH 1-

Permanganate

MnO4 1-

Thiocyanate

SCN1-

Carbonate

CO3 2-

Oxalate

C2O4 2-

Chromate

CrO4 2-

Dichromate

Cr2O7 2-

Hydrogen Phosphate

HPO4 2-

Peroxide

O22-

Sulfite

SO3 2-

Sulfate

SO4 2-

Thiosulfate

S2O32-

Phosphite

PO3 3-

Phosphate

PO4 3-