Polyatomic Ions

Hydronium
H3O+
Ammonium
NH4+
Acetate
CH3CO2
Carbonate
CO32-

Hydrogen Carbonate

or

Bicarbonate

HCO3
Chromate
CrO42-
Dichromate
Cr2O72-
Cyanide
CN
Hydroxide
OH
Hypochlorite
OCl
Nitrate
NO3
Nitrite
NO2
Oxalate
C2O42-
Permanganate
MnO4
Phosphate
PO43-
Hydrogen Phosphate
HPO42-
Dihydrogen Phosphate
H2PO4
Sulfate
SO42-

Hydrogen Sulfate

or

Bisulfate

HSO4
Sulfite
SO32-
x

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