Common Ions and Their Charges
A mastery of the common ions, their formulas and their charges, is a must for AP Chemistry.
Cations
Name
Silver ion
Zinc ion
Cadmium ion
Mercury (I) ion
Ammonium ion
Hydronium ion
Anions
Name
Ag+
Zn2+
Cd2+
Hg22+
NH4+
H3O+
-
H
CO32HCO3NO3NO2PO43HPO42H2PO4PO33SO42HSO4SO32ClO4ClO3ClO2ClOBrO4BrO3BrO2BrOIO4IO3IO2IOOHO22C2H3O2- (or CH3COO-)
C2O42CNMnO4CrO42Cr2O72-
Hydride
Carbonate
Hydrogen carbonate
(Bicarbonate)
Nitrate
Nitrite
Phosphate
Hydrogen phosphate
Dihydrogen phosphate
Phosphite
Sulfate
Hydrogen sulfate
Sulfite
Perchlorate
Chlorate
Chlorite
Hypochlorite
Perbromate
Bromate
Bromite
Hypobromite
Periodate
Iodate
Iodite
Hypoiodite
Hydroxide
Peroxide
Acetate
Oxalate
Cyanide
Permanganate
Chromate
Dichromate