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Copper (I)
Cu+
Copper II
Cu2+
Iron (II)
Fe2+
Iron (III)
Fe3+
Tin (II)
Sn2+
Tin (IV)
Sn4+
Chromium (II)
Cr2+
Chromium (III)
Cr3+
Lead (II)
Pb2+
Lead (IV)
Pb4+
Cobalt (II)
Co2+
Cobalt (III)
Co3+
Nickel (II)
Ni2+
Nickel (IV)
Ni4+
Gold (I)
Au+
Gold (III)
Au3+