Common Ions and Their Charges

ammonium
NH4+
cesium
Cs+
copper (I)
Cu+
hydrogen
H+
potassium
K+
silver
Ag+
sodium
Na+
barium
Ba++
beryllium
Be++
cadmium
Cd++
calcium
Ca++
cobalt (II)
Co++
copper (II)
Cu++
iron (II)
Fe++
lead (II)
Pb++
magnesium
Mg++
mercury (I)
Hg2++
mercury (II)
Hg++
nickel (II)
Ni++
strontium
Sr++
tin (II)
Sn++
zinc
Zn++
aluminum
Al+++
chromium (III)
Cr+++
iron (III)
Fe+++
lead (IV)
Pb++++
tin (IV)
Sn++++
acetate
C2H3O2
bromate
BrO3
bromide
Br
chlorate
ClO3
chloride
Cl
chlorite
ClO2
cyanide
CN
fluoride
F

hydrogen carbonate

(or bicarbonate)

HCO3
hydrogen sulfate
HSO4
hydrogen sulfide
HS
hydroxide
OH
iodide
I
nitrate
NO3
nitrite
NO2
permanganate
MnO4
carbonate
CO3
chromate
CrO4
dichromate
Cr2O7
oxide
O
oxalate
C2O4
peroxide
O2
sulfate
SO4
sulfide
S
sulfite
SO3
tartrate
C4H4O6
phosphate
PO4