Pd, or palladium, is a chemical element with the symbol Pd and atomic number 46. It is a rare, silvery-white metal that belongs to the platinum group of metals. Palladium is known for its excellent catalytic properties, making it valuable in various industrial applications, particularly in catalytic converters for vehicles, which help reduce harmful emissions. In addition to its use in automotive technology, Pd is also utilized in electronics, dentistry, and jewelry. Its resistance to corrosion and tarnish makes it an ideal choice for these applications. As a precious metal, palladium is traded on the London Metal Exchange and is often considered an investment asset.