The Element Oganesson
[Click for Isotope Data]
Atomic Number: 118
Atomic Weight: 294
Melting Point: Unknown
Boiling Point: Unknown
Phase at Room Temperature: Expected to be a Gas
Element Classification: Non-metal
Period Number: 7 Group Number: 18 Group Name: Noble Gas
Radioactive and Artificially Produced
What's in a name? Named after the scientist Yuri Oganessian.
Say what? Oganesson is pronounced as oh-gan-ess-on.
History and Uses:
On October 16, 2006, 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 oganesson. They produced oganesson by bombarding atoms of californium-249 with ions of calcium-48. This produced oganesson-294, an isotope with a half-life of about 0.89 milliseconds (0.00089 seconds), and three free neutrons. The californium target was irradiated with a total of 1.6*1019 calcium ions over the course of 1080 hours, resulting in the production of three atoms of oganesson.
Oganesson's most stable isotope, oganesson-294, has a half-life of about 0.89 milliseconds. It decays into livermorium-290 through alpha decay.
Since only a few atoms of oganesson 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 States: Unknown
3s2 3p6 3d10
4s2 4p6 4d10 4f14
5s2 5p6 5d10 5f14
6s2 6p6 6d10