AP Chemistry - Polyatomic Ions Symbols, Names, and Charges

Ammonium

Ammonium

NH4+1

Hydronium

H3O+1

Acetate

C2H3O2-1

Cyanide

CN-1

Thiocyantate

SCN-1

Permanganate

MnO4-1

Hydrogen Carbonate or Bicarbonate

HCO3-1

Hydroxide

OH-1

Nitrate

NO3-1

Nitrite

NO2-1

Carbonate

CO3-2

Chromate

CrO4-2

Peroxide

O2-2

Sulfate

SO4-2

Sulfite

SO3-2

Hydrogen Sulfate

HSO4-1

Arsenate

AsO4-3

Phosphate

PO4-3

Dichromate

Cr2O7-2

Perchlorate

ClO4-1

Chlorate

ClO3-1

Chlorite

ClO2-1

Hypochlorite

ClO-1

Bromate

BrO3-1

Periodate

IO4-1

Iodate

IO3-1

Iodite

IO2-