Palladium is an element with the symbol Pd and atomic number 46. It is a rare and lustrous silvery-white metal that belongs to the platinum group of metals, along with platinum, rhodium, iridium, osmium, and ruthenium. Like other platinum group metals, palladium has excellent catalytic properties, which make it useful in various industrial applications.

Some common uses of palladium include:

1. Catalytic Converters: Palladium is a key component in catalytic converters used in automobiles to convert harmful pollutants in exhaust gases into less harmful substances.
2. Electronics: Palladium is used in the production of certain electronic components, such as capacitors and resistors.
3. Jewelry: Similar to platinum, palladium is used in jewelry. It is a popular choice for those who want a white metal with properties similar to platinum but at a lower cost.
4. Chemical Applications: Palladium serves as a catalyst in various chemical reactions, particularly in organic synthesis.
5. Hydrogen Purification: Palladium membranes are used to purify hydrogen gas, separating it from other gases.

Due to its scarcity and diverse applications, palladium is considered a precious metal and is actively traded on commodity markets. Like platinum, palladium is valued for its unique properties and plays a crucial role in several industrial processes.  The density of palladium is 12.023 g/cm³.