Ag - Silver

Silver

Silver

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.

'You cannot hope to build a better world without improving the individuals. To that end each of us must work for his own improvement, and at the same time share a general responsibility for all humanity, our particular duty being to aid those to whom we think we can be most useful.'

Marie Curie
(1867-1934)