2006-06-28 00:45:59 · 11 answers · asked by gimmemoreids_4787 1 in Science & Mathematics ➔ Chemistry
A ductile substance is easily pulled or stretched into a thin wire without breaking.
"...gold is the most ductile metal and one gram of it can be drawn into a wire 2,300 meters long."
"The order of ductility of some familiar metals is gold > silver > platinum > iron > copper > palladium > aluminum > zinc > tin > lead"
2006-06-28 00:59:55 · answer #1 · answered by Seikilos 6 · 2⤊ 0⤋
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Name the most and the least ductile of metals?
2015-08-19 03:25:08 · answer #2 · answered by Cyrill 1 · 0⤊ 0⤋
Gold is the most ductile metal, a single gram can be beaten into a sheet of one square meter, or an ounce into 300 square feet.
I think alkali metals are the 'least' ductile.
2006-06-28 01:07:01 · answer #3 · answered by Rajiv G 4 · 1⤊ 1⤋
Most = Gold, Silver
2006-06-28 00:48:37 · answer #4 · answered by abhas1 3 · 1⤊ 0⤋
the least reactive metal is probably a member of the platinum group, Ir, Os or Pt but that is open to debate
2016-03-17 02:17:13 · answer #5 · answered by Anonymous · 0⤊ 0⤋
Gold is the most ductile and Aluminium is least
2006-06-28 01:08:26 · answer #6 · answered by Anonymous · 1⤊ 0⤋
Aluminum is far more ductile than steel. It is one of the most easily shaped metals.
2016-02-19 08:05:43 · answer #7 · answered by nicholas 1 · 0⤊ 0⤋
i have no idea about the least ductile but the most is gold
2006-06-28 00:53:21 · answer #8 · answered by orkunbaki 3 · 1⤊ 0⤋
Gold is the most ductile
Manganese would be my guess at least ductile. It is very brittle.
Antimony is also brittle and flaky.
2006-06-28 01:03:45 · answer #9 · answered by Iridium190 5 · 1⤊ 0⤋
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Metals Metal Ion Reactivity K K+ reacts with water Na Na+ Ba Ba2+ Sr Sr+ Ca Ca2+ Li Li+ Mg Mg2+ reacts with acids Al Al3+ Mn Mn2+ Zn Zn2+ Cr Cr2+ Fe Fe2+ Cd Cd2+ Co Co2+ Ni Ni2+ Sn Sn2+ Pb Pb2+ H2 H+ included for comparison Sb Sb3+ highly unreactive Bi Bi3+ Cu Cu2+ Hg Hg2+ Ag Ag+ Pt Pt+ Au Au3+ gold is the least reactive Gold (pronounced /ˈɡoʊld/) is a chemical element with the symbol Au (from its Latin name aurum) and atomic number 79. It is a highly sought-after precious metal which, for many centuries, has been used as money, a store of value and in jewelry. The metal occurs as nuggets or grains in rocks, underground "veins" and in alluvial deposits. It is one of the coinage metals. Gold is dense, soft, shiny and the most malleable and ductile of the known metals. Pure gold has a bright yellow color traditionally considered attractive. Gold formed the basis for the gold standard used before the collapse of the Bretton Woods system. The ISO currency code of gold bullion is XAU. Modern industrial uses include dentistry and electronics, where gold has traditionally found use because of its good resistance to oxidative corrosion. Chemically, gold is a transition metal and can form trivalent and univalent cations upon solvation. Gold does not react with most chemicals, but is attacked by chlorine, fluorine, aqua regia and cyanide. Gold dissolves in mercury, forming amalgam alloys, but does not react with it. Gold is insoluble in nitric acid, which will dissolve silver and base metals, and this is the basis of the gold refining technique known as "inquartation and parting". Nitric acid has long been used to confirm the presence of gold in items, and this is the origin of the colloquial term "acid test," referring to a gold standard test for genuine value. Gold is the most malleable and ductile metal; a single gram can be beaten into a sheet of one square meter, or an ounce into 300 square feet. Gold leaf can be beaten thin enough to become translucent. The transmitted light appears greenish blue, because gold strongly reflects yellow and red. Gold readily forms alloys with many other metals. These alloys can be produced to increase the hardness or to create exotic colors (see below). Gold is a good conductor of heat and electricity, and is not affected by air and most reagents. Heat, moisture, oxygen, and most corrosive agents have very little chemical effect on gold, making it well-suited for use in coins and jewelry; conversely, halogens will chemically alter gold, and aqua regia dissolves it via formation of the chloraurate ion. Common oxidation states of gold include +1 (gold(I) or aurous compounds) and +3 (gold(III) or auric compounds). Gold ions in solution are readily reduced and precipitated out as gold metal by adding any other metal as the reducing agent. The added metal is oxidized and dissolves allowing the gold to be displaced from solution and be recovered as a solid precipitate. Recent research undertaken by Sir Frank Reith of the Australian National University shows that microbes play an important role in forming gold deposits, transporting and precipitating gold to form grains and nuggets that collect in alluvial deposits.[1] High quality pure metallic gold is tasteless, in keeping with its resistance to corrosion (it is metal ions which confer taste to metals). In addition, gold is very dense, a cubic meter weighing 19300 kg. By comparison, the density of lead is 11340 kg/m³, and the densest element, iridium, is 22650 kg/m³.
2016-04-08 21:26:01 · answer #10 · answered by Anonymous · 0⤊ 0⤋