Silver is a metallic chemical element with the chemical symbol Ag (Greek: άργυρος <árgyros>, Latin: argentum, both from the Indo-European root *arg- for "grey" or "shining") and atomic number 47. A soft, white, lustrous transition metal, it has the highest electrical conductivity of any element and the highest thermal conductivity of any metal. The metal occurs naturally in its pure, free 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, and is used as an investment, to make ornaments, jewelry, high-value tableware, utensils (hence the term silverware), and currency coins. Today, silver metal is also used in electrical contacts and conductors, in mirrors and in catalysis of chemical reactions. Its compounds are used in photographic film, and dilute silver nitrate solutions and other silver compounds are used as disinfectants and microbiocides (oligodynamic effect). While many medical antimicrobial uses of silver have been supplanted by antibiotics, further research into clinical potential continues.
Read more about Silver: Characteristics, Isotopes, Compounds, Applications, History, Occurrence and Extraction, Price, Human Exposure and Consumption
Famous quotes containing the word silver:
“I had a little nut-tree, nothing would it bear
But a golden nutmeg and a silver pear;”
—Mother Goose (fl. 17th–18th century. I had a little nut-tree, nothing would it bear (l. 1–2)
“Walked forth to ease my pain
Along the shore of silver streaming Thames,
Whose rutty bank, the which his river hems,
Was painted all with variable flowers,”
—Edmund Spenser (1552?–1599)
“A black pall, you know, with a silver cross on it, or R.I.P.—requiescat in pace—you know. That seems to me the most beautiful expression—I like it much better than ‘He is a jolly good fellow,’ which is simply rowdy.”
—Thomas Mann (1875–1955)