Periodic Table Group and Classification of the of the Rhodium Element Elements can be classified based on their physical states (States of Matter) e.g. gas, solid or liquid. This element is a solid. Rhodium is classified as a "Transition Metal" which are located in Groups 3 - 12 of the Periodic Table. Elements classified as Transition Metals are generally described as ductile, malleable, and able to conduct electricity and heat.Nearly 75% of all the elements in the Periodic Table are classified as metals which are detailed in the List of Metals. Facts about the History and the Discovery of the Rhodium Element Rhodium was discovered by William Hyde Wollaston in England, 1803 History of the Periodic Table Check out the brief History of the Periodic Table which details dates and the names of famous scientists and chemists who contributed to the development of the Periodic Table. Occurrence of the Rhodium Element Obtained as a by-product of Nickel production Abundances of the element in different environments % in Universe 6×10-8% % in Sun 2×10-7% % in Meteorites 0.000018% % in Earth's Crust 7×10-8% % in Oceans N/A % in Humans N/A Associated Uses of Rhodium Alloying agent for hardening platinum and palladium Coatings / plating Electrodes for aircraft spark plugs Jewelry Oil of rhodium |