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| | Gold - the free encyclopedia (Site not responding. Last check: 2007-11-01) |
 | | Gold is a metallic element that exhibits a yellow color en masse but can be fl, ruby, or purple when finely divided.It is the most malleable and ductile metal known. |
 | | The color of solid gold as well as of the intensely colored, often purple, colloidal solutions that can be made from it is caused by the fact that the plasmon frequency of this element lies in the visible range, which causes red and yellow light tobe reflected and blue light to be absorbed. |
 | | Gold will alloy with many other metals; alloys with copper yield a redder metal,alloys with iron are green, aluminiumalloys are purple, alloys with platinum metals produce white, natural bismuth with silver alloys produce fl. |
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