Polyatomic ions

Table of common polyatomic cations, arranged by charge. Alternate names are given in italics. Select the name of the ion for information about its occurrence, uses, properties, and structure.
+2
Hg22+ mercury(I) or mercurous
+1
NH4+ ammonium
H3O+ hydronium
-1
C2H3O2- acetate
ClO3- chlorate
ClO2- chlorite
CN- cyanide
H2PO4- dihydrogen phosphate
HCO3- hydrogen carbonate or bicarbonate
HSO4- hydrogen sulfate or bisulfate
OH- hydroxide
ClO- hypochlorite
NO3- nitrate
NO2- nitrite
ClO4- perchlorate
MnO4- permanganate
SCN- thiocyanate
-2
CO32- carbonate
CrO42- chromate
Cr2O72- dichromate
HPO42- hydrogen phosphate
O22- peroxide
SO42- sulfate
SO32- sulfite
S2O32-thiosulfate
-3
PO43- phosphate

Resources

Nomenclature of Inorganic Chemistry (IUPAC)
Primary source for formulas and names in the field guide section (International Union of Pure and Applied Chemistry, Nomenclature of Inorganic Chemistry, 2nd Edition, Butterworths, London, 1979)
Inorganic Chemical Nomenclature (IUPAC)
Bibliography of IUPAC publications on inorganic nomenclature.


General Chemistry Online! Polyatomic ions

Copyright © 1997-2005 by Fred Senese
Comments & questions to fsenese@frostburg.edu
Last Revised 06/11/07.URL: http://antoine.frostburg.edu/chem/senese/101/compounds/print-polyatomic.shtml