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Gold is a highly prized precious metal that for millennia has been used as money, a store of value and in jewelry. The metal occurs as nuggets or grains in rocks and in alluvial deposits and is one of the coinage metals. It is a soft, shiny, yellow, dense, malleable, and ductile (trivalent and univalent) transition metal. Modern industrial uses include dentistry and electronics. Gold forms the basis for a monetary standard used by the International Monetary Fund (IMF) and the Bank for International Settlements (BIS). Its ISO currency code is XAU.
Gold is a chemical element in the periodic table with the symbol Au (from the Latin aurum) and atomic number 79. The adjective auric refers to something made of gold. Gold does not react with most chemicals but is attacked by chlorine, fluorine, aqua regia and cyanide and dissolves in mercury.
Notable characteristics
Gold is a metallic element with a characteristic yellow color, but can also be black or ruby when finely divided, while colloidal solutions are intensely colored and often purple. These colors are the result of gold's plasmon frequency lying in the visible range, which causes red and yellow light to be reflected, and blue light to be absorbed. Only silver colloids exhibit the same interactions with light, albeit at a shorter frequency, making silver colloids yellow in color. More on [ Gold ]
Gold :: Precious Metals
Gold :: Metals
Transition Metals :: Elements
Gold :: Metallic Deposits
ChemGlobe: Gold - Electronic, thermal, and steric data along with an isotope table.
Meta Description: [ The chemical element [Au] - Gold - Datasheet ]
ChemicalElements.com: Gold - Basic information, atomic structure, and table of isotopes.
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EnvironmentalChemistry.com: Gold - Atomic structure, chemical and physical properties, and table of nuclides.
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Gold - Data tables and historic information.
Gold Bulletin - The peer reviewed journal on the latest science, technology and applications of gold. It includes papers on the latest research advances, reviews, conference reports, and highlights of patents and scientific literature.
Meta Description: [ Gold Bulletin ]
It's Elemental: Gold - Basic physical and historical information.
Meta Description: [ The Element Gold - Basic Physical and Historical Information ]
LANL: Gold - Sources, properties, uses, cost, and isotopes.
Lenntech: Gold - Physical data, chemical properties, health and environmental effects.
Meta Description: [ chemical properties, health and environmental effects of gold ]
Radiochemistry of Gold - Full text of the monograph by J. F. Emery (Oak Ridge National Laboratory, Oak Ridge, Tennessee). [PDF]
USGS Minerals Information: Gold - Statistics and information on the worldwide supply, demand, and flow of the element (PDF format).
Meta Description: [ Statistics and information on the worldwide supply, demand, and flow of gold and silver. ]
Visual Elements: Gold - Image, general and physical information, source, uses, key isotopes, and ionisation energies.
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WebElements: Gold - Extensive information on history, uses, occurrence, compounds, and properties.
Meta Description: [ This WebElements periodic table page contains key information for the element gold ]
Wikipedia: Gold - Properties of the element, including its history, applications, and characteristics.
World Gold Council: Science and Industry - Information about various different topics regarding gold.
Meta Description: [ World Gold Council, the global advocate for gold. ]
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