Hassium (Hs), an artificially produced element belonging to the transuranium group, atomic number 108. It was synthesized and identified in 1984 by West German researchers at the Institute for Heavy Ion Research (Gesellschaft für Schwerionenforschung [GSI]) in Darmstadt. On the basis of its position in the periodic table of the elements, it is expected to have chemical properties similar to those of osmium.
The GSI research team, led by Peter Armbruster, produced an isotope of hassium in a fusion reaction by irradiating lead-208 with ions of iron-58. The isotope, which has a mass number of 265, is exceedingly unstable and has a half-life of only 2 milliseconds. Experiments conducted by A.G. Demin and other researchers at the Joint Institute for Nuclear Research in Dubna, Russia, U.S.S.R., suggested the existence of two more isotopes of hassium with mass numbers of 263 and 264. Continue reading from Encyclopedia Britannica
Hassium was first made by a team led by Peter Armbruster and Gottfried Münzenber at the Heavy Ion Research Laboratory in Darmstadt, Germany in 1984. They bombarded lead-208 with iron-58 nuclei to produce three atoms of hassium. The name hassium is derived from the Latin name for the German state of Hesse. Continue reading from Chemicool
Hassium was named for the German state Hessen. Its name is derived from the Latin version of Hessen, Hassias. Hassium was discovered in 1984. It was first produced in Darmstadt, Germany, by a team led by Peter Armbruster and Gottfried Münzenber. Hassium is produced artificially and only small amounts have been made. Continue reading from LiveScience
