Discovery Information
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Who: Dubna (Joint Institute for Nuclear Research) |
When: 2000 |
Where: Russia |
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Name Origin
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From the latin for "one one six". |
"Ununhexium" in different languages. |
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Sources
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Synthetically produced element. |
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Uses
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None. |
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History
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In December, 2000 the Joint Institute for Nuclear Research (Dubna, Russia) published results that described the discovery
in 2000 of decay of the isotope 292Uuh, which was produced in the reaction of 248Cm with 48Ca. It has a half-life of about 18 milliseconds (0.018 seconds) and decayed into 288Uuq (ununquadium, element 114). On May 11, 2001, the institute reported synthesizing a second atom, and that the properties confirmed a region of "enhanced" stability.
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In 2004 in the Joint Institute for Nuclear Research the synthesis of this element was confirmed by another method (the chemical
identifying on final products of decay of element).
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Notes
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In 1999, researchers at Lawrence Berkeley National Laboratory announced the discovery of elements 116 and 118 (ununhexium
and ununoctium), in a paper published in Physical Review Letters. The following year, they published a retraction after other
researchers were unable to duplicate the results. In June 2002, the director of the lab announced that the original claim
of the discovery of these two elements had been based on data fabricated by the principal author Victor Ninov.
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