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The Element Ununtrium

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113

Uut

Ununtrium

286

Atomic Number: 113

Atomic Weight: 286

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: 13    Group Name: none

Radioactive and Artificially Produced

What's in a name? A temporary name that means one-one-three.

Say what? Ununtrium is pronounced as oon-oon-TRI-em.

History and Uses:

On February 2, 2004, 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 ununtrium. In experiments performed between July 14, 2003 and August 10, 2003, atoms of americium-243 were bombarded with ions of calcium-48 using a device called a cyclotron. This produced one atom of ununpentium-287 and three atoms of ununpentium-288. All four atoms of ununpentium quickly decayed into ununtrium through alpha decay.

Ununtrium's most stable isotope, ununtrium-286, has a half-life of about 20 seconds. It decays into roentgenium-282 through alpha decay.

Since only a few atoms of ununtrium 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:

(Unconfirmed)

1s2

2s2   2p6

3s2   3p6   3d10

4s2   4p6   4d10   4f14

5s2   5p6   5d10   5f14

6s2   6p6   6d10

7s2   7p1