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Refining of copper, zinc, lead}}
Refining of copper, zinc, lead}}
'''Germanium''' ''(jer-MAY-ni-em)'' is a brittle, silvery-white semi-metal (metalloid).<ref>http://www.rsc.org/periodic-table/element/32/germanium</ref>
==History==
Germanium was first proposed to exist by Dmitri Mendeleyev in 1871. He had recently created a Periodic Table of Elements, and identified gaps which where unknown elements. Germanium was officially discovered in 1886 by Clemens Winkler, a German chemist. He found it in the mineral [[argyrodite]] (Ag8GeS6).
{{Template:Periodic table}}
{{Template:Periodic table}}
==Properties==
Melting Point: 1720.85°F (938.25°C or 1211.40 K)
Boiling Point: 5131°F (2833°C or 3106 K)
Density: 5.323 grams per cubic centimeter
State of Matter at Room Temperature: Solid
==Uses==
Germanium is primarily used as a semiconductor. With [[arsenic]], [[gallium]], [[indium]], [[antimony]] or [[phosphorus]], it is used to make transistors. Another major use for Germanium is lenses. It is used in the manufacture of wide-angle camera lenses and objective [[lenses]] for [[microscopes]]. <ref>http://www.rsc.org/periodic-table/element/32/germanium</ref> It is also used to create alloys and as a phosphor in fluorescent lamps. <ref>http://education.jlab.org/itselemental/ele032.html</ref> Additionally, adding 1% germanium to [[silver]] prevents tarnishing.<ref>http://www.rsc.org/periodic-table/element/32/germanium</ref>
==References==
<references />
==External Resources==
http://www.rsc.org/periodic-table/element/32/germanium