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The Element Ununoctium

[Click for Isotope Data]





Atomic Number: 118

Atomic Weight: 294

Melting Point: Unknown

Boiling Point: Unknown

Density: 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? A temporary name that means one-one-eight.

Say what? Ununoctium is pronounced as oon-oon-OCT-ee-em.

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 ununoctium. They produced ununoctium by bombarding atoms of californium-249 with ions of calcium-48. This produced ununoctium-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 ununoctium.

Ununoctium's most stable isotope, ununoctium-294, has a half-life of about 0.89 milliseconds. It decays into livermorium-290 through alpha decay.

Since only a few atoms of ununoctium 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

Electron Shell Configuration:



2s2   2p6

3s2   3p6   3d10

4s2   4p6   4d10   4f14

5s2   5p6   5d10   5f14

6s2   6p6   6d10

7s2   7p6