Silver-bearing ores may contain amounts of silver from a trace to several thousand troy ounces per avoirdupois ton, or about 10 percent. Practically all sulfides of lead, copper, and zinc contain some silver. Silver is widely distributed in nature, but the total amount is quite small when compared with other metals the metal constitutes 0.05 part per million of Earth’s crust. Reproduced with permission of the trustees of the British Museum photograph, Ray Gardner for The Hamlyn Publishing Group Limited Silver is one of the noblest-that is, least chemically reactive-of the transition elements.Īlexander the Great as Zeus Ammon on a silver tetradrachm of Lysimachus, 297–281 bce, thought to be a copy of a portrait by Lysippus in the British Museum. Silver also finds use as a catalyst for its unique ability to convert ethylene to ethylene oxide, which is a precursor of many organic compounds. Silver has the highest known electrical and thermal conductivity of all metals and is used in fabricating printed electrical circuits and as a vapour-deposited coating for electronic conductors it is also alloyed with such elements as nickel or palladium for use in electrical contacts. Because of its comparative scarcity, brilliant white colour, malleability, ductility, and resistance to atmospheric oxidation, silver has long been used in the manufacture of coins, ornaments, and jewelry. Together with gold and the platinum-group metals, silver is one of the so-called precious metals. SpaceNext50 Britannica presents SpaceNext50, From the race to the Moon to space stewardship, we explore a wide range of subjects that feed our curiosity about space!.Learn about the major environmental problems facing our planet and what can be done about them! Saving Earth Britannica Presents Earth’s To-Do List for the 21st Century.Britannica Beyond We’ve created a new place where questions are at the center of learning.100 Women Britannica celebrates the centennial of the Nineteenth Amendment, highlighting suffragists and history-making politicians.
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