AP Chem Polyatomic Ions

Hg2²⁺

Mercury(I)

SCN^1-

Thiocynate

NH4¹⁺

Ammonium

CO3²-

Carbonate

C2H3O2^1- or CH3COO^1-

Acetate

CrO4²-

Chromate

CN^1-

Cyanide

C2O7²-

Dichromate

H2PO4^1-

Dihydrogen Phosphate

HPO4²-

Hydrogen Phosphate

OH^-1

Hydroxide

C2O4²-

Oxalate

HCO3^1-

Hydrogen Carbonate

O_2^2-

Peroxide

NO3^1-

Nitrate

SO3^²-

Sulfite

NO2^1-

Nitrite

SO4^2-

Sulfate

ClO^1- or OCl^1-

Hypochlorite

S2O3^²-

Sulfate

S2O3^2-

Thiosulfate

ClO2^1-

Chlorite

ClO3^1-

Chlorate

ClO4^1-

Perchlorate

MnO4^1-

Permanganate

PO4^3-

Phosphate

PO3^3-

Phosphite