Chem Polyatomic Ions

Mercury (I)

Hg2 +2

Ammonium

NH4 +1

Cyanide

CN -1

Carbonate

CO3 -2

Hydrogen carbonate (biocarbonate)

HCO3 -1

Acetate

C2H3O2 -1

Oxalate

C2O4 -2

Hypochlorite

ClO -1

Chlorite

ClO2 -1

Chlorate

ClO3 -1

Perchlorate

ClO4 -1

Chromate

CrO4 -2

Dichromate

Cr2O7 -2

Permanganate

MnO4 -1

Nitrite

NO2 -1

Nitrate

NO3 -1

Hydroxide

OH -1

Peroxide

O2 -2

Phosphate

PO4 -3

Monohydrogen phosphate

HPO4 -2

Dihydrogen phosphate

H2PO4 -1

Sulfate

SO4 -2

Sulfite

SO3 -2

Hydrogen sulfate (bisulfate)

HSO4 -1

Hydrogen sulfite (bisulfite)

HSO3 -1

Thiosulfate

S2O3 -2

Oxide

O -2

Phosphite

PO3 -3

Bromate

BrO3 -1

Perbromate

BrO4 -1

Bromite

BrO2 -1

Thiocyanide

SCN -1