The Transition Metals are those elements in groups 3 through 12 on the Periodic Table. They share the properties of all metals, those of malleability, ductility and conductivity. Their highest energy electrons can be found in the “d” sublevel, which allows them many different oxidation states (an oxidation state is another term for the charge of its ion). A few of the transition metals have only one oxidation state. These are silver, which only has the oxidation state +1 (Ag+), and cadmium and zinc, which only have the oxidation state +2 (Cd2+ and Zn2+).