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{{Element | name=Technetium | symbol=Tc | anumber=43 | amass=97 amu | state=Solid | class=Metallic | cstructure=Hexagonal | color=Silvery-gray | date=1937 | discname=Carlo Perrier and Emillo G. Segre | origname=from the Greek ''tekhnetos'', meaning ''artificial''. | uses=Source of radiation for medical research. | obtained=Manufactured by bombarding [[Molybdenum]] with [[heavy hydrogen]] in a [[cyclotron]]. Only minute quantities have been found outside the laboratory, as a by-product of the fission of Uranium-238. }}
{{Element | name=Technetium | symbol=Tc | anumber=43 | amass=97 amu | state=Solid | class=Metallic | cstructure=Hexagonal | color=Silvery-gray | date=1937 | discname=Carlo Perrier and Emillo G. Segre | origname=from the Greek ''tekhnetos'', meaning ''artificial''. | uses=Source of radiation for medical research. | obtained=Manufactured by bombarding [[Molybdenum]] with [[heavy hydrogen]] in a [[cyclotron]]. Only minute quantities have been found outside the laboratory, as a by-product of the fission of Uranium-238. }}
'''Technetium''' ''(tek-NEE-she-em)'' is a [[radioactive]], silvery-grey synthetic [[metal]].
==Additional Properties==
Melting Point: 3915°F (2157°C or 2430 K)
Boiling Point: 7709°F (4265°C or 4538 K)
Density: 11 grams per cubic centimeter
(Gamma) Half-Life: 6.0058 hours<ref>http://education.jlab.org/itselemental/ele043.html</ref>
==History==
In 1937, the Italian chemists Carlo Perrier and Emilio Segrè isolated Technetium using a cyclotron; it was the first artificially produced (synthetic) element. Since this element has such a short half-life, it cannot be found in nature.<ref>http://education.jlab.org/itselemental/ele043.html</ref> Before this time, it had been predicted but never found.<ref>http://www.rsc.org/periodic-table/element/43/technetium</ref>
==Uses==
The primary use of Technetium is for medical exploration as a tracer. It can also be added to steel for corrosion resistance. This not usually practical, however, since it is a radioactive material.
==References==
<references />
==External Resources==
http://www.rsc.org/periodic-table/element/43/technetium
[[Category:Elements]]
[[Category:Elements]]
[[Category:Metals]]
[[Category:Metals]]
{{Template:Periodic table}}
{{Template:Periodic table}}