Hassium

Hs 108

Symbol: Hs
Atomic number: 108
Shell structure:  2.8.18.32.32.14.2
Atomic Weight: 269
Electron Configuration: [Rn]7s25f146d6
Hassium Electron Shell


Hassium is a synthetic element. It was first synthesized in 1984 by a German research team led by Peter Armbruster and Gottfried Münzenberg. It is not present in the environment at all.
 

It is predicted that Hassium will be the densest element yet known, with a density exceeding two and a half times that of lead. This assumes that a measurable quantity of the element can be made. It's colour and properties are unknown but it is probably metallic and silvery white or grey in appearance and has similar properties to those of osmium. Its boiling and melting points are also unknown, however it is presumed to be a solid at room temperature.

As so little of the element has been made, it has no proper use outside of research. It has an extremely short half-life meaning its effects on Humans and the Environment are unknown, as are it uses.

The name hassium was proposed by Peter Armbruster and Gottfried Münzenberg. It is derived from the Latin name for the German state of Hessen where the institute for Heavy Ion Research is located.

There was an element naming controversy as to what element 108 should be called, IUPAC adopted unniloctium (Uno) as a temporary name for element 108. In 1994, IUPAC recommended that element 108 be named hahnium. In 1997 however, the name hassium was adopted.
 

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