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| Predicted properties |
| Name, Symbol, Number |
Ununhexium, Uuh, 116 |
| Chemical series |
Presumably poor metals |
| Group, Period, Block |
16, 7 , p |
| Appearance |
Unknown, probably a metallic
and silvery white or grey colour |
| Atomic weight |
[292] amu |
| Electron configuration |
[Rn] 5f14 6d10 7s27p4
(a guess based upon polonium) |
| e- 's per energy
level |
2, 8, 18, 32, 32, 18, 6 |
| State of matter |
presumably a solid |
Ununhexium is the temporary name of an unconfirmed synthetic superheavy element in the
periodic table that has the temporary symbol Uuh and has the atomic
number 116.
History
In January, 2001 the Joint Institute for Nuclear Research, Dubna,
published results [1] that described the decay of the isotope 292Uuh, which was produced in the reaction of
248Cm with 48Ca. It has a half-life of about 0.6 milliseconds (0.0006 seconds) and decayed into
288Uuq.
In 1999, researchers at Lawrence Berkeley National Laboratory announced the discovery of elements 116 and 118
(see 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.
Ununhexium is a temporary IUPAC systematic element name.
[1] Y. T. Oganessian, et al., Observation of the decay of(292)116, Phys. Rev. C 63, 011301 (2001).
Ununhexium in popular culture
- In the world of UFO conspiracy theory culture during
the 1980s and 1990s, Bob Lazar asserted that ununpentium functioned as "fuel" for UFOs, being "stepped up" to ununhexium under
"particulate bombardment," and that the ununhexium's decay products would include antimatter. These assertions are considered implausible in terms of nuclear physics.
External link
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