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Level 4
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Cl-
Chloride
Br-
Bromide
I-
Iodide
SO4, 2-
Sulphate
CO3, 2-
Carbonate
NO3, -
Nitrate
NH4, +
Ammonium
K+
potassium (ion)
Li+
lithium (ion)
Mg 2+
Magnesium (ion)
Ca (2+)
Calcium (ion)
Cu (2+)
Copper (ion)
Fe, 2+
Iron (II)
Fe3+
Iron (III)
