Hg. Mercury in its elemental (pure) form, that is, as a metal; hence the
synonym metallic mercury. A shiny, silver-gray metal that is a liquid at room
temperature.
Source: GreenFacts
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Elemental mercury has many uses and is for instance found in
thermometers, barometers, dental amalgams, batteries, fluorescent lights and
some electrical switches. It is rarely found in nature.
