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palladium

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palladium

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Also known as Pd, element 46, 46Pd

Palladium is a chemical element; it has the symbol Pd and atomic number 46. It is a rare and lustrous silvery-white metal discovered in 1802 by the English chemist William Hyde Wollaston. He named it after the asteroid Pallas (formally 2 Pallas), which was itself named after the epithet of the Greek goddess Athena, acquired by her when she slew Pallas. Palladium, platinum, rhodium, ruthenium, iridium and osmium form together a group of elements referred to as the platinum group metals. They have similar chemical properties, but palladium has the lowest melting point and is the least dense of t

OverviewAI-generated

Palladium is a chemical element with the symbol Pd and atomic number 46. It has a mass of 106.42 and an electronegativity of 2.2. The element was discovered in 1803. Its electron configuration is listed as [Kr] 5s² 5d⁸. The ionic radius is 0.86.

The chemical formula for palladium is Pd. It has zero hydrogen bond donors and acceptors, and its charge is 0. The topological polar surface area is 0. The canonical SMILES representation is [Pd]. The Unicode character for the element is 鈀.

Research on palladium includes 34,312 records in PubMed. The subject is referenced by 1,566 other encyclopedia articles.

Synthesized by Vinony from 24 facts across 4 sources: Wikidata, PubChem, PubMed, Vinony graph. Generated from structured data (not the Wikipedia text) and checked against those facts — may still contain errors.

Chemical data

Formula
Pd
Molecular weight
106.42 g/mol
IUPAC name
palladium
SMILES
[Pd]
InChIKey
KDLHZDBZIXYQEI-UHFFFAOYSA-N
Polar surface area
0 Ų
H-bond donors
0
H-bond acceptors
0
Formal charge
0

via PubChem

Research

34,312 papers

via PubMed

~24 min read

Encyclopedic overview

31 sections
Contents
  • Characteristics
  • Isotopes
  • Compounds
  • Palladium(II)
  • Palladium(0)
  • Other oxidation states
  • Occurrence
  • Applications
  • Catalysis
  • Electronics
  • Technology
  • Hydrogen storage
  • Medicine
  • Jewellery
  • Photography
  • Art
  • Research
  • Cold fusion
  • Super tough metallic glass
  • Alternatives
  • Effects on health
  • Toxicity
  • Precautions
  • History
  • Palladium as investment
  • Palladium producers
  • Exchange-traded products
  • Bullion coins and bars
  • See also
  • References
  • External links

Palladium is a chemical element; it has the symbol Pd and atomic number 46. It is a rare and lustrous silvery-white metal discovered in 1802 by the English chemist William Hyde Wollaston. He named it after the asteroid Pallas (formally 2 Pallas), which was itself named after the epithet of the Greek goddess Athena, acquired by her when she slew Pallas. Palladium, platinum, rhodium, ruthenium, iridium and osmium form together a group of elements referred to as the platinum group metals. They have similar chemical properties, but palladium has the lowest melting point and is the least dense of them.

More than half the supply of palladium and its congener platinum is used in catalytic converters, which convert as much as 90% of the harmful gases in automobile exhaust (hydrocarbons, carbon monoxide, and nitrogen dioxide) into nontoxic substances (nitrogen, carbon dioxide and water vapor). Palladium is also used in electronics, dentistry, medicine, hydrogen purification, chemical applications, electrochemical sensors, electrosynthesis, groundwater treatment, and jewelry.

Excerpted from Wikipedia’s “palladium” article, available under the CC BY-SA 4.0 licence.

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