Gold :: essays research papers fc

flamboyant, nothing can comp are to this precious metal. A symbol of wealth and prosperity, it has been a value for explorers and adventurers and a lure for conquerors. Today it is vital to commerce and finance popular in ornamentation, and increasing importance in technology.The nature of lucky is diverse. The chemical element gold is a heavy, soft metal. It weighs nearly twice as much as lead. Shiny and deep yellow in color, gold is one of two metals, which are not gray or white when pure. Gold is the most ductile of metals. Properties of gold are ? Symbol - Au? nuclear Number &8211 79? Atomic Weight &8211 196.967? Electron Configuration - -32-18-1? Group in Periodic Table &8211 1B? Density at 68 F &8211 19.3 g/cm3? stewing Point &8211 5,370.8 F? Melting Point &8211 1,945.4 F ? Number of Protons/Electrons &8211 79? Number of Neutrons &8211 118? Classification &8211 Transition Metal? Crystal Structure &8211 CubicFacts? get out of Discovery &8211 Circa 3000 BC? Discover &8211 Un known? Name of Origin &8211 From the Old English word geolo (yellow)? Symbol Origin &8211 From the Latin word aurum (gold)? Uses &8211 electronics, jewelry, coins? Obtained From &8211 crust of the earth, sloven oresAtomic and Chemical PropertiesIn it&8217s usual state &8211 atomic mass subjugate 197 &8211 gold is stable. However, there are radioactive (unstable) isotopes of mass number 186 to 196 and 198 to 203. Gold normally exhibits a chemical valence of one or three.Gold is the &8220noblest of the noble metals (gold, platinum, palladium, and rhodium), so termed because of their inertness, or reluctance to enter into chemical reactions. Gold allow not react with common acids but is attacked by a three-to-one mixture of hydrochloric and nitric acids. This combination is called aqua regia because it reacts with the so-called royal metal. Gold will not combine directly with oxygen, but oxides may be formed indirectly. Gold will also combine with the halogens (fluorine, chlorine br omine, and iodine) and with the cyanides.The purity of gold is verbalised in Karats (KT), on a scale of 24, or in fineness, on a scale of 1,000. Pure gold is 24 Karat or 1,000 fine. An metallic element containing 75 percent gold would be described as 18- Karat gold or 750 fine.History(Sanskrit Jval Anglo &8211 Saxon gold L. aurum, gold) Known and highly cute from earliest times, gold is found in nature as the free metal and in tellurides it is very widely distributed and is almost always associated with quarts or pyrite.