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Iron
Fe (2+,3+) and is Transitional metal
Copper
Cu (1+, 2+), Transitional metal
Cobalt
Co (2+, 3+) transitional metal
Chromium
Cr (3+, 6+) transitional metal
Tin
Sn (2+, 4+) Post-transtional metals
Lead
Pb (2+, 4+) post transitional