AP Chemistry Polyatomic Ions and Monatomic Ions

Acetate

C2H3O2 -

Carbonate

CO3 2-

Chromate

CrO4 2-

Cyanide

CN -

Hydroxide

O-H -

Nitrate

NO3 -

Nitrite

NO2 -

Phosphate

PO4 3-

Phosphite

PO3 3-

Permanganate

MnO4 -

Sulfate

SO4 2-

Sulfite

SO3 2-

Dichromate

Cr2O7 2-

Ammonium

NH4 +

Hydronium

H3O +

Chlorite

ClO2 -

Chlorate

ClO3 -

Hypochlorite

ClO -

Perchlorate

ClO4 -

Bicarbonate (Hydrogen Carbonate)

HCO3 -

Bisulfate (Hydrogen Sulfate)

HSO4 -

Bisulfite (Hydrogen Sulfite)

HSO3 -

Oxide

O2 -

Sulfide

S2 -

Nitride

N3 -

Phosphide

P3 -

Fluoride

F -

Chloride

Cl -

Bromide

Br -

Iodide

I -