-[ Mercury ]-[ Atomic number: 80 ]-[ Chemical symbol: Hg ]-
Known since antiquity, Mercury is a heavy, liquid metal
element at room temperature - the only such element. Despite
the wide ranging use, mercury is a relatively rare element,
though this is mitigated by its ore deposits tending to be
highly concentrated.
The uses of mercury include medical applications such as
dental amalgams, topical antiseptic compounds, and blood
pressure meters.  Outside of medicine, mercury can be found
in telescopes to form flat mirror surfaces, as well as
parabolic surfaces when their container is spun. Mercury has
historically and continues to be used in many other
industries and applications.
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