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Palladium is a chemical element with atomic number 46 located in group 10 of the periodic table of elements. Its symbol is Pd. It is a transition metal of the platinum group, soft, ductile, malleable, and very abundant. It resembles platinum chemically and is extracted from some copper and nickel mines. Used primarily as a catalyst and in jewelry.
Palladium is a rare metal, shiny white silver was discovered in 1803 by William Hyde Wollaston, who named the asteroid Pallas, which gets its name, in turn, one of the epithets of the Greek goddess Athena.
Palladium, along with platinum, rhodium, ruthenium, iridium and osmium form a group of elements referred to as the platinum group metals that share similar chemical properties to the metals group, but palladium has the point lower melting and is the least dense of these precious metals.
The unique properties of palladium and other platinum group metals are considered for widespread use. One in every four products manufactured today either contain platinum group metals play a key role during the process of manufactura.2 More than half of the supply of palladium and platinum to its congener goes into catalytic converters, which make up 90% of harmful gases from auto exhaust (hydrocarbons, carbon monoxide and nitrogen oxide) into less harmful substances (nitrogen, carbon dioxide and water vapor). Palladium is found in many electronic products such as computers, mobile phones, capacitors, multilayer ceramic coating, low voltage components, electrical contacts and televisions SED / OLED / LCD. Palladium is also used in dentistry, medicine, hydrogen purification, chemical applications, and in the treatment of groundwater. Palladium plays a key role in the technology used for fuel cell that combines hydrogen and oxygen to produce electricity, heat and water.
Mineral deposits of palladium and other platinum group metals are rare, and the largest deposits are located in South Africa, USA, Canada and Russia. In addition to mining, recycling is also a source of palladium.