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Silver [Ag]
CAS-ID: 7440-22-4
An: 47 N: 61
Am: 107.8682 g/mol
Group No: 11
Group Name: Coinage metal
Block: d-block  Period: 5
State: solid at 298 K
Colour: silver Classification: Metallic
Boiling Point: 2435K (2162°C)
Melting Point: 1234.93K (961.78°C)
Density: 10.49g/cm3
Discovery Information
Who: Known to the ancients. Silver has been coined to produce money since 700 BC by the Lydians, in the form of electrum. Later, silver was refined and coined in its pure form. The words for "silver" and "money" are the same in at least 14 languages.
Name Origin
Latin argentum (silver). Silver from old english seolfor for silver.
 "Silver" in different languages.
Sources
Found in ores called argentite (AgS), light ruby silver (Ag3AsS3), dark ruby silver (Ag3SbS3) and brittle silver. The main sources of silver are in Canada, Mexico (the largest producer), Peru, Australia and the USA. Around 10 thousand tons are produced annually.
Abundance
 Universe: 0.0006 ppm (by weight)
 Sun: 0.001 ppm (by weight)
 Carbonaceous meteorite: 0.14 ppm
 Earth's Crust: 0.07 ppm
 Seawater:
   Atlantic surface: n/a ppm
   Atlantic deep: n/a ppm
   Pacific surface: 1 x 10-7 ppm
   Pacific deep: 2.4 x 10-6 ppm
Uses
Used in alloys for jewellery, in many compounds, coins, photographic film and paper electronics, solder, mirrors and batteries.
History
Silver has been known since antiquity. It has long been valued as a precious metal and used in currency, ornaments and jewelry, as well as utensils (hence the term silverware). Silver bullion has the ISO currency code of XAG. Today, it is also used in photographic film, electrical contacts, and mirrors. Elemental silver is also used to catalyze chemical reactions.
Notes
Silver has been used for thousands of years for ornaments and utensils, for trade, and as the basis for many monetary systems. Its value as a precious metal was long considered second only to gold. In Ancient Egypt and Medieval Europe, it was often more valuable than gold.
Sterling silver is 92.5% silver and 7.5% other metals, usually copper, although other elements, such as germanium, zinc, platinum, silicon and boron can also be used to improve various properties.
Images
Silver ore Silver ore
Silver bar Silver bar