Palladium (atomic number 46, chemical symbol Pd) is a ductile and soft metal with a lustrous sheen. Other elements in the platinum group include osmium, iridium, and palladium. It is an element of low toxicity and is resistant to corrosion.
The metal was discovered in 1803 by the English physicist and chemist William Wollaston. Today, it is found in South and North America, Ethiopia, Russia, Brazil, and Australia. Palladium is also found in copper and nickel deposits on the territory of South Africa and Canada. Most of the palladium is in the form of byproduct from nickel refining.