The transition metals possess partially-filled d sub-shells and are in groups 4 to 11 of the periodic table. They are hard, very conductive, have multiple oxidation states, display catalytic activity, and can form colored and/or paramagnetic compounds.
GHS H Statement H350-H373-H332-H317 May cause cancer. May cause damage to organs through prolonged or repeated exposure. Harmful if inhaled. May cause an allergic skin reaction.