UNC CHEM101 Polyatomic Ions

Chemical Formula

Name

CO32−

Carbonate

HCO3−

Hydrogen carbonate or bicarbonate

CH3COO−

Acetate

CN−

Cyanide

SCN−

Thiocyanate

ClO−

Hypochlorite

ClO2−

Chlorite

ClO3−

Chlorate

ClO4−

Perchlorate

CrO42−

Chromate

Cr2O72−

Dichromate

MnO4−

Permanganate

N3−

Azide

NH4+

Ammonium

NO2−

Nitrite

NO3−

Nitrate

OH−

Hydroxide

O22−

Peroxide

PO43−

Phosphate

HPO42−

Hydrogen phosphate

H2PO4−

Dihydrogen phosphate

S22−

Disulfide

SO32−

Sulfite

SO42−

Sulfate

HSO3−

Hydrogen sulfite or bisulfite

HSO4−

Hydrogen sulfate or bisulfate