Polyatomic Ions

NH4 +

Ammonium

ClO -

hypochlorite

ClO2 -

Chlorite

ClO3 -

Chlorate

ClO4 -

Perchlorate

C2H3O2 -

Acetate

HSO4 -

Hydrogen Sulfate

HCO3 -

Bicarbonate/Hydrogen Carbonate

NO2 -

Nitrite

NO3 -

Nitrate

CN -

Cyanide

OH-

Hydroxide

MnO4 -

Permanganate

HPO4 2-

Hydrogen Phosphate

CrO4 2-

Chromate

Cr2O7 2-

Dichromate

SO3 2-

Sulfite

SO4 2-

Sulfate

CO3 2-

Carbonate

C2O4 2-

Oxalate

SiO3 2-

Silicate

O2 2-

Peroxide

PO4 3-

Phosphate

PO3 3-

Phosphite

BrO -

Hypobromite

BrO2 -

Bromite

BrO3 -

Bromate

BrO4 -

Perbromate

IO -

hypoiodite

IO2 -

Iodite

IO3 -

Iodate

IO4 -

Periodate