![]() ![]() Until 1933, the United States used the gold standard, in which gold backed the paper currency. The gold atom has an electron configuration of 4f 14 5d 10 6s 1 The Gold Standard Silver and copper are also in group 11, although gold is not that similar to them chemically. It is a very nonreactive transition metal in group 11, period 6, with 1 valence electron. It is located in the d-block on the periodic table, with platinum to its left and mercury on its right. Gold, symbol Au, has an atomic number of 79. In the 1848 Gold Rush, settlers discovered gold in California, causing an influx of new migrants.Some luxurious restaurants like to add gold leaf, or small pieces of gold sheet, onto their dishes for decoration. ![]() One of the most famous applications of gold is in Egyptian pharaoh King Tut’s burial mask.Gold is one of the least reactive transition metals-it does not react with oxygen or sulfur.Because it is so soft, gold usually forms alloys with other metals such as silver for use in jewelry.International reserves hold 45% of all gold in the world.All nations still accept it as a medium of exchange today. Gold served as a backing for paper currency in the US from the 19th century all the way up to 1933.Gold does not corrode or tarnish, making it a very durable and thus attractive metal.When flattened, 1 ounce of gold can produce 187 square feet of gold sheets.Gold is the most malleable and ductile element on the periodic table.It has malleable, conductive, and ductile metal properties, and its bright, attractive color makes it a very valuable metal. The element gold is a well-known transition metal with atomic number 79. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |