Polyatomic Ions

Hydronium

H3O +1 charge

Mercury (I)

Hg2 +2 charge

Ammonium

NH4 +1 charge

Acetate

C2H3O -1 charge

CH3OO -1 charge

Cyanide

CN -1 charge

Carbonate

CO3 -2 charge

Hydrogen Carbonate

HCO3 -1 charge

Oxalate

C2O4 -2 charge

Hypochlorite

CIO -1 charge

Chlorite

CIO2 -1 charge

Chlorate

CIO3 -1 charge

Perchlorate

CIO4 -1 charge

Chromate

CrO4 -2 charge

Dichromate

Cr2O7 -2 charge

Permanganate

MnO4 -1 charge

Nitrite

NO2 -1 charge

Nitrate

NO3 -1 charge

Peroxide

O2 -2 charge

Hydroxide

OH -1 charge

Phosphate

PO4 -3 charge

Thiocyanate

SCN -1 charge

Sulfite

SO3 -2 charge

Sulfate

SO4 -2 charge

Hydrogen sulfate

HSO4 -1 charge

Thiosulfate

S2O3 -2 charge