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Polyatomic Ions

NameFormula
ammonium NH4 1+
hydronium H3O 1+
cyanide CN 1-
hydroxide OH 1-
nitrite NO2 1-
nitrate NO3 1-
permanganate MnO4 1-
thiocyanate SCN 1-
acetate CH3COO- (C2H3O2 1-)
peroxide O2 2-
sulfite SO3 2-
sulfate SO4 2-
thiosulfate S2O3 2-
phosphate PO4 3-
oxalate C2O4 2-
chromate CrO4 2-
dichromate Cr2O7 2-
hydrogen carbonate (bicarbonate) HCO3 1-
hydrogen sulfite (bisulfite) HSO3 1-
hydrogen sulfate (bisulfate) HSO4 1-
monohydrogen phosphate HPO4 2-
di hydrogen phosphate H2PO4 1-
Bromate BrO3 1-
Chlorate ClO3 1-
Chlorite ClO2 1-
hypo chlorite ClO 1-
Phosphite PO3 3-
iodate IO3 1-
perchlorate ClO4 -
periodate IO4 -
Silicate SiO4 4-
Created by: elindberg
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