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Common Polyatomic Ions
Flashcards of common ions used in chemical reactions. Incl name and chemical formula
22
Chemistry
Undergraduate 1
10/15/2009
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Term
Ammonium
 Definition

NH4+

Remember: Ammonium is the ONLY positive polyatomic ion.
Term
nitrite
 Definition
NO2-
Term
Nitrate
 Definition
NO3 -
Term
Sulfite
 Definition
SO32–
Term
Sulfate
 Definition
SO42–
Term
hydrogen sulfate (bisulfate)
 Definition
HSO4–
Term
Hydroxide
 Definition
OH–
Term
Cyanide
 Definition
CN–
Term
Phosphate
 Definition
PO43–
Term
Hydrogen phosphate
 Definition
HPO42–
Term
dihydrogen phosphate
 Definition
H2PO4–
Term
carbonate
 Definition
CO32–
Term
hydrogen carbonate (bicarbonate)
 Definition
HCO3–
Term
hypochlorite
 Definition
ClO–
Term
chlorite
 Definition
ClO2–
Term
chlorate
 Definition
ClO3–
Term
perchlorate
 Definition
ClO4–
Term
acetate
 Definition
C2H3O2–
Term
permanganate
 Definition
MnO4–
Term
Dichromate
 Definition
Cr2O72–
Term
Chromate
 Definition
CrO42–
Term
Peroxide
 Definition
O22–
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