Hydrogen
H+
Sodium
Na+
Potassium
K+
Calcium
Ca2+
Magnesium
Mg 2+
Aluminium
Al3+
Silver
Ag+
Lead
Pb2+
Iron(II)
Fe2+
Copper(II)
Cu2+
Zinc
2+
Ammonium
NH4 +
Fluoride
F-
Chloride
Cl-
Bromide
Br-
Iodide
I-
Oxide
O2-
Sulfide
S2-
Nitride
N3-
Hydroxide
OH-
Nitrate
NO3 -
Carbonate
CO3 2-
Sulfate
SO4 2-
Nitrates
Soluble
Carbonates
Insoluble
Na2CO3
soluble
K2CO3
soluble
Sulphates
Soluble
Hydroxides and Oxides
Insoluble
CaSO4
insoluble
BaSO4
insoluble
PbSO
insoluble
Chlorides Bromides and Iodides
soluble
AgCl
insoluble
PbCl2
insoluble
KOH
soluble
NaOH
soluble
K2O
soluble
Na2O
soluble
CaO
soluble
Ca(OH)2
soluble