Polyatomic Ions

Hydroxide (-1)

Hydroxide (-1)

OH-

Acetate (-1)

C2H3O2-

Cyanide (-1)

CN-

Hydrogen Carbonate (-1)

HCO3-

Nitrate (-1)

NO3-

Nitrite (-1)

NO2-

Hypochlorite (-1)

ClO-

Chlorite (-1)

ClO2-

Chlorate (-1)

ClO3-

Perchlorate (-1)

ClO4-

Hydrogen Sulfate (-1)

HSO4-

Chromate (-2)

CrO4-2

Dichromate (-2)

Cr2O7-2

Carbonate (-2)

CO3-2

Sulfite (-2)

SO3-2

Sulfate (-2)

SO4-2

Phosphate (-3)

PO4-3

Ammonium (+1)

NH4+

Sulfur

S8

Phosphorus

P4