Ammonium
NH4 +
Carbonate
CO3 2-
Sulphate
SO4 2-
Nitrate
NO3 -
Hydroxide
OH -
Phosphate
PO4 3-
Sodium
Na +
Lithium
Li +
Potassium
K +
Beryllium
Be 2+
Magnesium
Mg 2+
Calcium
Ca 2+
Fluoride
F -
Chloride
Cl -
Bromide
Br -
Oxygen
O 2-
Sulphur
S 2-
Copper(I)
Cu +
Copper(II)
Cu 2+
Iron(II)
Fe 2+
Iron(III)
Fe 3+