Common Polyatomic Ions

Carbonate
CO32-
Chlorate
CIO3
Chromate
CrO42-
Cyanide
CN
Dichromate
Cr2O72-
Hydrogen carbonate (bicarbonate)
HCO3
Hydrogen sulfate
HSO4
Hydroxide
OH
Nitrate
NO3
Permanganate
MnO4
Peroxide
O22-
Phosphate
PO43-
Sulfate
SO42-
Sulfide
S2-
Thiocyanate
SCN
Ammonium
NH4+
x

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