Mercury (element)
Mercury (element)
Mercury (/'mɜːrkjʊri/; from the Latin Mercurius, named after the Roman god Mercury) is a chemical element with the symbol Hg and atomic number 80. It is commonly known as quicksilver and was formerly named hydrargyrum (/haɪˈdrɑːrdʒərəm/).
Etymology
The name "Mercury" is derived from the Latin Mercurius, which is named after the Roman god Mercury. The symbol Hg comes from the Greek word hydrargyrum, meaning "water-silver", due to its liquid state and silvery appearance.
Properties
Mercury is a heavy, silvery-white metal that is a poor conductor of heat but a fair conductor of electricity. It is the only metallic element that is liquid at room temperature. Mercury can form alloys with other metals, called amalgams.
Uses
Mercury is used in thermometers, barometers, manometers, sphygmomanometers, float valves, mercury switches, mercury relays, fluorescent lamps and other devices. It is also used in dental amalgams and in the production of chlorine and caustic soda.
Health effects
Exposure to mercury can have serious health effects, including damage to the nervous system, digestive system and kidneys. It can also harm the development of children. Mercury exposure is a particular concern for people who work in industries that use mercury.
Related terms
- Amalgam: An alloy of mercury with another metal.
- Mercury: The Roman god after whom the element is named.
- Mercury poisoning: A disease caused by exposure to mercury or its compounds.
External links
- Medical encyclopedia article on Mercury (element)
- Wikipedia's article - Mercury (element)
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