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Palladium is a chemical element with symbol Pd and atomic number 46. A rare silver-white transition metal of the platinum group, palladium resembles platinum chemically and is extracted from some copper and nickel ores. It is primarily used as an industrial catalyst and in jewelry.
Notable characteristics
Palladium is a soft silver-white metal that resembles platinum. It is the least dense and has the lowest melting point of the platinum group metals. It is soft and ductile when annealed and greatly increases its strength and hardness when it is cold-worked. Palladium is chemically attacked by sulfuric, nitric acid and hydrochloric acid in which it dissolves slowly. This metal also does not react with oxygen at normal temperatures (and thus does not tarnish in air). Palladium heated to 800°C produce layer of palladium(II)-oxide (PdO). It lightly tarnishes in moist atmosphere containing sulfur.
This metal has the uncommon ability to absorb up to 900 times its own volume of hydrogen at room temperatures. It is thought that this possibly forms palladium hydride (PdH2) but it is not yet clear if this is a true chemical compound.
More on [ Palladium ]
Platinum Metals :: Elements
Transition Metals :: Elements
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ChemGlobe: Palladium - Electronic, thermal, and steric data along with an isotope table.
Meta Description: [ The chemical element [Pd] - Palladium - Datasheet ]
ChemicalElements.com: Palladium - Basic information, atomic structure, and isotopes.
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It's Elemental: Palladium - Basic physical and historical information.
Meta Description: [ The Element Palladium - Basic Physical and Historical Information ]
LANL: Palladium - History, sources, properties, and uses.
Lenntech: Palladium - Physical data, chemical properties, health and environmental effects.
Meta Description: [ chemical properties, health and environmental effects of palladium ]
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Palladium - Data tables and historic information.
Stillwater Palladium - All aspects of palladium with its extensive history, production, and uses.
Meta Description: [ Palladium is a precious metal of the platinum group metals with many valuable uses in industry, instrument of investment, and metal for coinage. This site covers detailed history, discovery, research and uses in industry. Palladium ore is mined by Stillwater Mining Company in Montana, refined by ... ]
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WebElements: Palladium - Extensive information on history, uses, occurrence, compounds, and properties.
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Wikipedia: Palladium - Properties of the element, including its history, applications, and characteristics.
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