Mercury
Mercury has the symbol Hg and the atomic number of 80. It has a freezing point of -38 Celsius and a boiling point of 356. It can be found in thermometers and many other appliances, but it is being used less and less because of its poisoness properties when it is swallowed. It is silver and very shiny, and usually found as a liquid. It is extremely dense and cannot be soaked up by most materials. The earliest forms of Mercury was found in Egyptian Tombs dating back to 1500 BCE.
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