Polyatomic Ions

H3O +

H3O +

Hydronium

NH3 +

Ammonium

Hg2 2+

Mercury (I)

N3 -

Azide

C2H3O2 -

Acetate

NO2 -

Nitrite

NO3 -

Nitrate

ClO 2-

Chlorite

ClO3 -

Chlorate

ClO -

Hypochlorite

ClO4 -

Perchlorate

SO4 2-

Sulfate

SO3 2-

Sulfite

HSO4 2-

Hydrogen sulfate

PO4 2-

Phosphate

PO3 2-

Phosphite

HPO4 2-

Hydrogen phosphate

H2PO4 -

Dihydrogen phosphate

CO3 2-

Carbonate

HCO3 -

Hydrogen carbonate

C2O4 2-

Oxalate

O2 2-

Peroxide

CN-

Cyanide

SCN -

Thiocyanate

CrO4 2-

Chromate

Cr2O7 2-

Dichromate

OH-

Hydroxide

MnO4 -

Permanganate

3+

Al

2+

Zn

2+

Cd

+1

Ag