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Mercury (Hg) and its uses

Mercury (Hg) and its uses. Facts about Hg. Mercury is a heavy, silvery, liquid metal Atomic # 80 Atomic Mass 200.59 Melting Point 234 K Boiling Point 629 K Density 13546 kg m -3. Where does Hg come from?.

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Mercury (Hg) and its uses

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  1. Mercury (Hg) and its uses

  2. Facts about Hg • Mercury is a heavy, silvery, liquid metal • Atomic # 80 • Atomic Mass200.59 • Melting Point 234 K • Boiling Point 629 K • Density 13546 kg m-3

  3. Where does Hg come from? • Mercury occurs very rarely free in nature, but can be found in ores, principally cinnabar. • This is mostly found in Spain and Italy, which together produce about 50% of the world's supply of this element. • The metal is obtained by heating cinnabar in a current of air and condensing the vapor. Cinnabar

  4. Uses of Hg • Mercury easily forms alloys, called amalgams, with other metals such as gold, silver and tin (mining). • Used in making advertising signs, mercury switches and other electrical apparatus. • Used in labs for making thermometers, barometers, diffusion pumps and many other instruments. • Other uses: pesticides, dental work, batteries and catalysts. • Because of its toxicity, all these uses of mercury are being phased out or are under review.

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