Silver | Wikipedia audio article
Channel: wikipedia tts
Date: 2019-01-08

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Silver


00:01:54 1 Characteristics
00:05:50 1.1 Isotopes
00:07:04 2 Chemistry
00:07:25 3 Compounds
00:08:59 3.1 Oxides and chalcogenides
00:09:08 3.2 Halides
00:14:40 3.3 Other inorganic compounds
00:14:49 3.4 Coordination compounds
00:16:22 3.5 Organometallic
00:18:32 3.6 Intermetallic
00:21:04 4 Etymology
00:24:30 5 History
00:26:32 6 Symbolic role
00:28:39 7 Occurrence and production
00:29:54 8 Monetary use
00:35:55 8.1 Price
00:38:24 9 Applications
00:42:32 9.1 Jewellery and silverware
00:44:08 9.2 Medicine
00:45:05 9.3 Electronics
00:45:15 9.4 Brazing alloys
00:47:17 9.5 Chemical equipment
00:49:07 9.6 Catalysis
00:50:03 9.7 Photography
00:50:41 9.8 Nanoparticles
00:51:28 9.9 Miscellanea
00:52:32 10 Precautions
00:53:48 11 See also
00:54:33 12 References
00:56:03 13 Bibliography
00:58:56 14 External links



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SUMMARY
=======
Silver is a chemical element with symbol Ag (from the Latin argentum, derived from the Proto-Indo-European h₂erǵ: "shiny" or "white") and atomic number 47. A soft, white, lustrous transition metal, it exhibits the highest electrical conductivity, thermal conductivity, and reflectivity of any metal. The metal is found in the Earth's crust in the pure, free elemental form ("native silver"), as an alloy with gold and other metals, and in minerals such as argentite and chlorargyrite. Most silver is produced as a byproduct of copper, gold, lead, and zinc refining.
Silver has long been valued as a precious metal. Silver metal is used in many bullion coins, sometimes alongside gold: while it is more abundant than gold, it is much less abundant as a native metal. Its purity is typically measured on a per-mille basis; a 94%-pure alloy is described as "0.940 fine". As one of the seven metals of antiquity, silver has had an enduring role in most human cultures.
Other than in currency and as an investment medium (coins and bullion), silver is used in solar panels, water filtration, jewellery, ornaments, high-value tableware and utensils (hence the term silverware), in electrical contacts and conductors, in specialized mirrors, window coatings, in catalysis of chemical reactions, as a colorant in stained glass and in specialised confectionery. Its compounds are used in photographic and X-ray film. Dilute solutions of silver nitrate and other silver compounds are used as disinfectants and microbiocides (oligodynamic effect), added to bandages and wound-dressings, catheters, and other medical instruments.