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Mn2+
manganese(II)
Fe2+
iron(II)
Fe3+
iron(III)
Co2+
cobalt(II)
Co3+
cobalt(III)
Ni2+
nickel(II)
Cu+
copper(I)
Cu2+
copper(II)
Zn2+
zinc
Ag+
silver
Sn2+
tin(II)
Sn4+
tin(IV)
Pb2+
lead(II)
Pb4+
lead(IV)