Common Cations & Anions

Aluminum
Al+3
Ammonium
NH4+
Barium
Ba+2
Cadmium
Cd+2
Calcium 
Ca+2
Cesium
Cs+

Chromium III

(Chromic)

Cr+3

Cobalt II

(Cobaltous)

Co+2

Copper I

Culprous

Cu+
Copper II
(Cupric)
Cu+2
Hydrogen
H+
Iron II
(Ferrous)
Fe+2
Iron III
(Ferric)
Fe+3
Lead II
(Plumbous)
Pb+2
Lithium
Li+
Magnesium
Mg+2

Manganese II

(Manganous)

Mn+2
Mercury I
(Mercurous)
Hg22+
Mercury II
(Mercuric)
Hg+2
Potassium
K+
Silver
Ag+
Sodium
Na+
Strontium
Sr+2

Tin II

(Stannous)

Sn+2

Tin IV

(Stannic)

Sn+4
Zinc
Zn+2
Acetate
C2H3O2
Bromide
Br
Carbonate
CO32-
Chlorate
ClO3
Chloride
Cl
Chromate
CrO42-
Cyanide
CN
Dichromate
Cr2O72-
Dihydrogen Phosphate
H2PO4
Fluoride
F
Hydride
H

Hydrogen Carbonate

(Bicarbonate)

HCO3
Hydrogen Phosphate
HPO42-

Hydrogen Sulfite

(Bisulfite)

HSO3

Hydrogen Sulfate

(Bisulfate)

HSO4
Hydroxide
OH
Iodide
I
Nitrate
NO3
Nitride
N3-
Nitrite
NO2
Oxide
O2-
Permanganate
MnO4
Peroxide
O22-
Phosphate
PO43-
Sulfate
SO42-
Sulfide
S2-
Sulfite
SO32-
Thiocyanate
SCN