The Element Darmstadtium
Atomic Number: 110
Atomic Weight: 281
Melting Point: Unknown
Boiling Point: Unknown
Phase at Room Temperature: Expected to be a Solid
Element Classification: Metal
Period Number: 7
Group Number: 10
Group Name: none
Special Notes: Radioactive and Artificially Produced
What's in a name? Named for the city of Darmstadt, Germany.
Say what? Darmstadtium is pronounced as darm-STADT-ee-em.
History and Uses:
Darmstadtium was first produced by Peter Armbruster, Gottfried Münzenber and their team working at the Gesellschaft für Schwerionenforschung in Darmstadt, Germany on November 9th, 1994. They bombarded atoms of lead with ions of nickel with a device known as a linear accelerator. This produced one atom of darmstadtium-269, an isotope with a half-life of about 0.17 milliseconds (0.00017 seconds), after at least a billion billion (1,000,000,000,000,000,000) nickel ions were fired at the lead target over the course of a week.
Darmstadtium's most stable isotope, darmstadtium-281, has a half-life of about 20 seconds. About 15% of the time, it decays into hassium-277 through alpha decay. The remaining 85% of the time, it decays through spontaneous fission.
Since only a few atoms of darmstadtium 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 6d9