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Ag - Silver

Silver

 Silver 
Ag
Atomic Number: 47
Atomic Weight: 107.868
Element Type: Transition Metal
Crystal Structure: Cubic Face Centered
Melting Point: 961.78°C = 1763.204°F = 1234.93 K
Boiling Point: 2162.0°C = 3923.6°F = 2435.15 K
Critical Temp: °C = °F = K
Atomic Radius: 1.75 Å (Å = Angstrom = 10-10 m)
Covalent Radius: 1.34 Å
Electronegativity: 1.93

History

(Anglo-Saxon, Seolfor siolfur; L. argentum) Silver has been known since ancient times.It is mentioned in Genesis. Slag dumps in Asia Minor and on islands in the Aegean Seaindicate that man learned to separate silver from lead as earl as 3000 B.C.


Sources

Silver occurs native and in ores such as argentite (Ag2S) and horn silver (AgCl); lead,lead-zinc, copper, gold, and copper-nickel ores are principal sources. Mexico, Canada,Peru, and the U.S. are the principal silver producers in the western hemisphere.



Science Quote

'All of us, are truly and literally a little bit of stardust.'

William Fowler
(1911-1995)


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