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Hassium [Hs]
CAS-ID: 54037-57-9
An: 108 N: 157
Am: [269] g/mol
Group No: 8
Group Name: Transactinides
Block: d-block  Period: 7
State: presumably a solid at 298 K
Colour: unknown, but probably metallic and silvery white or grey in appearance Classification: Metallic
Boiling Point: unknown
Melting Point: unknown
Density: unknown
Availability: Hassium, is a synthetic element that is not present in the environment at all.
Discovery Information
Who: Peter Armbruster, Gottfried Münzenberg, et al.
When: 1984
Where: GSI, Darmstadt, Germany
Name Origin
Latin "Hassias" meaning "Hess", the German state.
 "Hassium" in different languages.
Sources
Synthetically prepared element. The first atoms were made by fusing 208Pb with 58Fe.
Uses
None.
History
Hassium was first synthesized in 1984 by a German research team led by Peter Armbruster and Gottfried Münzenberg at the Institute for Heavy Ion Research (Gesellschaft für Schwerionenforschung) in Darmstadt. The name hassium was proposed by them, derived from the Latin name for the German state of Hesse where the institute is located.
There was an element naming controversy as to what the elements from 101 to 109 were to be called; thus IUPAC adopted unniloctium as a temporary element name for this element. In 1994 a committee of IUPAC recommended that element 108 be named hahnium. The name hassium was adopted internationally in 1997.
Notes
In August of 1997 the International Union of Pure and Applied Chemistry announced the official naming of this element as Hassium.
Element 108 was previously known as Unniloctium; from the latin for "one zero eight".