![](pixmaps/trans.gif) InnermostIntercostalsMuscle
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Sigma KEE - Zirconium
Zirconium
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Grey-white metallic transition element. Five natural isotopes and six radioactive isotopes are known. Used in nuclear reactors for a {neutron} absorber. Discovered in 1789 by Martin Klaproth, isolated in 1824 by Berzelius.
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