116
Uuh
Ununhexium
291
Atomic Number: 116
Atomic Weight: 291
Melting Point: Unknown
Boiling Point: Unknown
Density: Unknown
Phase at Room Temperature: Expected to be a Solid
Element Classification: Metal
Period Number: 7 Group Number: 16 Group Name: Chalcogen
Radioactive and Artificially Produced
What's in a name? A temporary name that means one-one-six.
Say what? Ununhexium is pronounced as oon-oon-HEX-i-em.
History and Uses:
On December 6, 2000, scientists working at the Joint Institute for Nuclear Research in Dubna, Russia, along with scientists from the U.S. Department of Energy's Lawrence Livermore National Laboratory, announced the creation of ununhexium. They produced ununhexium by bombarding atoms of curium-248 with ions of calcium-48. This produced ununhexium-292, an isotope with a half-life of about 0.6 milliseconds (0.0006 seconds), and four free neutrons.
Ununhexium's most stable isotope, ununhexium-291, has a half-life of about 18 milliseconds. It decays into ununquadium-287 through alpha decay.
Since only a few atoms of ununhexium have ever been produced, it currently has no uses outside of basic scientific research.
Estimated Crustal Abundance: Not Applicable
Estimated Oceanic Abundance: Not Applicable
Number of Stable Isotopes: 0 (View all isotope data)
Ionization Energy: Unknown
Oxidation State: Unknown
(Unconfirmed) |
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This page is maintained by Steve Gagnon.
