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Common Polyatomic Ions
Anions
22
Chemistry
Undergraduate 2
02/23/2010
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Term
acetate
 Definition

CH3COO-

 

(or C2H3O2-)
Term
cyanide
 Definition
CN-
Term
hydroxide
 Definition
OH-
Term
hypochlorite
 Definition
ClO-
Term
chlorite
 Definition
ClO2-
Term
chlorate
 Definition
ClO3-
Term
perchlorate
 Definition
ClO4-
Term
nitrite
 Definition
NO2-
Term
nitrate
 Definition
NO3-
Term
permanganate
 Definition
MnO4-
Term
carbonate
 Definition
CO32-
Term

hydrogen carbonate

 

(or bicarbonate)

 Definition
HCO3-
Term
chromate
 Definition
CrO42-
Term
dichromate
 Definition
Cr2O72-
Term
peroxide
 Definition
O22-
Term
phosphate
 Definition
PO43-
Term
hydrogen phosphate
 Definition
HPO42-
Term
dihydrogen phosphate
 Definition
H2PO4-
Term
sulfite
 Definition
SO32-
Term
sulfate
 Definition
SO42-
Term

hydrogen sulfate

 

(or bisulfate)

 Definition
HSO4-
Term

Naming oxoanions:

 

prefixes & suffixes as # of O atoms increases

 Definition

hypo- (root) -ite

          (root) -ite

          (root) -ate

  per- (root) -ate
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