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Atomic symbol Pd
Atomic number 46
Classification Transition metal
Atomic mass 106.42 amu
Number of Stable Isotopes 7
Density (grams per cc) 12.023 g/cm^3
Other Information
Date of discovery 1802
Name of discoverer William Hyde Wollaston
Name origin After the asteroid Pallas
Uses Catalytic converters, blood sugar test strips.
Obtained from Platinum-group Ore bodies.

Palladium is a chemical element with the chemical symbol Pd and the atomic number 46. It is a rare transition metal that was discovered in 1804.[1] It is considered to be a Precious metal. Some of its many practical uses include catalysts, electronics, use in blood sugar test strips,[2] coins, photography and dental casting.[3] It is most often mined in the Ural Mountains, South Africa, and Ontario.


  1. History of Palladium (English). RFL (2013). Retrieved on 27 January 2015. “Palladium was discovered by the British chemist William Hyde Wollaston in 1804.”
  3. (10 October 2008) Biocompatibility of Dental Materials (in English). Springer Science & Business Media. ISBN 9783540777823. Retrieved on 27 January 2015. “Palladium is a very common component of dental casting alloys of all types, and its use increases periodically in response to the increased cost of gold.”