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It's Elemental

The Element Hassium

[Click for Isotope Data]


108 Hs Hassium 270

Atomic Number: 108

Atomic Weight: 270

Melting Point: Unknown

Boiling Point: Unknown

Density: Unknown

Phase at Room Temperature: Solid

Element Classification: Metal

Period Number: 7

Group Number: 8

Group Name: none

Special Notes: Radioactive and Artificially Produced

What's in a name? From the Latin word for the German state of Hessen, Hassias.

Say what? Hassium is pronounced as HAS-ee-em.

History and Uses:

Hassium was first produced by Peter Armbruster, Gottfried Münzenber and their team working at the Gesellschaft für Schwerionenforschung in Darmstadt, Germany in 1984. They bombarded atoms of lead-208 with ions of iron-58 with a device known as a linear accelerator. This produced atoms of hassium-265, an isotope with a half-life of about 2 milliseconds (0.002 seconds), and a free neutron.

Hassium's most stable isotope, hassium-270, has a half-life of about 22 seconds. It decays into seaborgium-266 through alpha decay.

Since only small amounts of hassium 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   6d6


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For questions about this page, please contact Steve Gagnon.