Palladium

From WikiMD's Food & Medicine Encyclopedia

(Redirected from Palladous)

Palladium is a chemical element with the symbol Pd and atomic number 46. It is a rare and lustrous silvery-white metal discovered in 1803 by William Hyde Wollaston. He named it after the asteroid Pallas, which was itself named after the epithet of the Greek goddess Athena, acquired by her when she slew Pallas.

Characteristics[edit]

Palladium, platinum, rhodium, ruthenium, iridium and osmium form a group of elements referred to as the platinum group metals (PGMs). These have similar chemical properties, but palladium has the lowest melting point and is the least dense of them.

Applications[edit]

The largest use of palladium today is in catalytic converters. Palladium is also used in electronics, dentistry, medicine, hydrogen purification, chemical applications, groundwater treatment, and jewelry. Palladium is a key component of fuel cells, which react hydrogen with oxygen to produce electricity, heat, and water.

Occurrence[edit]

Palladium is found in the Earth's crust at a concentration of 0.015 ppm. It occurs naturally in native form and alloyed with gold and other platinum-group metals in placer deposits of the Ural Mountains, Australia, Ethiopia, and the Americas.

History[edit]

Palladium was discovered in 1803, in London, by English chemist William Hyde Wollaston. He examined the residues left from dissolving the platinum ore in aqua regia, a mixture of hydrochloric and nitric acids.

Health effects[edit]

Palladium compounds are considered to be of low toxicity compared to other heavy metals, and their primary health effect is allergic reactions.

See also[edit]

References[edit]

<references />

External links[edit]

This article is a medical stub. You can help WikiMD by expanding it!
PubMed
Wikipedia


Stub icon
   This article is a medical stub. You can help WikiMD by expanding it!
Navigation: Wellness - Encyclopedia - Health topics - Disease Index‏‎ - Drugs - World Directory - Gray's Anatomy - Keto diet - Recipes

Ad. Transform your health with W8MD Weight Loss, Sleep & MedSpa

W8MD's happy loser(weight)

Tired of being overweight?

Special offer:

Budget GLP-1 weight loss medications

  • Semaglutide starting from $29.99/week and up with insurance for visit of $59.99 and up per week self pay.
  • Tirzepatide starting from $45.00/week and up (dose dependent) or $69.99/week and up self pay

✔ Same-week appointments, evenings & weekends

Learn more:

Advertise on WikiMD

WikiMD Medical Encyclopedia

Medical Disclaimer: WikiMD is for informational purposes only and is not a substitute for professional medical advice. Content may be inaccurate or outdated and should not be used for diagnosis or treatment. Always consult your healthcare provider for medical decisions. Verify information with trusted sources such as CDC.gov and NIH.gov. By using this site, you agree that WikiMD is not liable for any outcomes related to its content. See full disclaimer.
Credits:Most images are courtesy of Wikimedia commons, and templates, categories Wikipedia, licensed under CC BY SA or similar.

Retrieved from "https://wikimd.org/index.php?title=Palladium&oldid=6341912"