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Chronium (Cr)
2+
3+
Manganese (Mn)
2+
Iron (Fe)
2+
3+
Cobalt (Co)
2+
3+
Copper (Cu)
+
2+
Silver (Ag)
+
Zinc (Zn)
2+
Cadmium (Cd)
2+
Mercury (Hg)
2+
Aluminium (Al)
3+
Tin (Sn)
2+
4+
Lead (Pb)
2+
4+