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The Element Meitnerium

[Click for Isotope Data]

109

Mt

Meitnerium

278

Atomic Number: 109

Atomic Weight: 278

Melting Point: Unknown

Boiling Point: Unknown

Density: Unknown

Phase at Room Temperature: Solid

Element Classification: Metal

Period Number: 7    Group Number: 9    Group Name: none

Radioactive and Artificially Produced

What's in a name? Named after the scientist Lise Meitner.

Say what? Meitnerium is pronounced as met-NEAR-ee-um.

History and Uses:

Meitnerium was first produced by Peter Armbruster, Gottfried Münzenber and their team working at the Gesellschaft für Schwerionenforschung in Darmstadt, Germany in 1982. They bombarded atoms of bismuth-209 with ions of iron-58 with a device known as a linear accelerator. This produced atoms of meitnerium-266, an isotope with a half-life of about 3.8 milliseconds (0.0038 seconds), and a free neutron.

Meitnerium's most stable isotope, meitnerium-278, has a half-life of about 8 seconds. It decays into bohrium-274 through alpha decay.

Since only small amounts of meitnerium 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   6d7

7s2