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Vocabulary flashcards covering 28 common polyatomic ions and their chemical formulas.
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Ammonium
NH₄⁺
Cyanide
CN⁻
Hydronium
H₃O⁺
Nitrate
NO₃⁻
Acetate
CH₃COO⁻ (also written C₂H₃O₂⁻)
Permanganate
MnO₄⁻
Chlorate
ClO₃⁻
Sulfate
SO₄²⁻
Carbonate
CO₃²⁻
Chromate
CrO₄²⁻
Dichromate
Cr₂O₇²⁻
Peroxide
O₂²⁻
Phosphate
PO₄³⁻
Silicate
SiO₃²⁻
Bromate
BrO₃⁻
Iodate
IO₃⁻
Mercury(I) (Mercurous)
Hg₂²⁺
Azide
N₃⁻
Sulfite
SO₃²⁻
Phosphite
PO₃³⁻
Chlorite
ClO₂⁻
Oxalate
C₂O₄²⁻
Bicarbonate (Hydrogen carbonate)
HCO₃⁻
Perchlorate
ClO₄⁻
Hypochlorite
ClO⁻
Bisulfate (Hydrogen sulfate)
HSO₄⁻
Hydrogen phosphate
HPO₄²⁻
Dihydrogen phosphate
H₂PO₄⁻