Common Polyatomic Ions
Cards
OH
Hydroxide ^n1^
NH ~4~
Ammonium ^p1^
NO ~3~
Nitrate ^n1^
NO ~2~
Nitrite ^n1^
ClO ~3~
Chlorate ^n1^
ClO ~2~
Chlorite ^n1^
CO ~3~
Carbonate ^n2^
HCO ~3~
Hydrogen carbonate
also called bicarbonate
^n1^
CN
Cyanide ^n1^
C ~2~ H ~3~ O ~2~
Acetate ^n1^
SO ~4~
Sulfate ^n2^
HSO ~4~
Hydrogen Sulfate
also known as bisulfate
^n1^
SO ~3~
Sulfite ^n2^
HSO ~3~
Hydrogen sulfite
also known as bisulfite
^n1^
PO ~4~
Phosphate ^n3^
HPO ~4~
Hydrogen Phosphate ^n2^
H ~2~ PO ~4~
Dihydrogen Phosphate ^n1^
PO ~3~
Phosphite ^n3^
MnO ~4~
Permanganate ^n1^
CrO ~4~
Chromate ^n2^
Cr ~2~ O ~7~
dichromate ^n2^
ClO ~4~
perchlorate ^n1^

