Facts About Hassium

Etymology: Hassium was named after Hessen in Germany. That name comes from the Hassian Latin version, Hassas

Found: Hassium was discovered in 1984. It was originally produced by a team led by Peter Armbruster and Gottfried Münzenber in Darmstadt, Germany.

Hassium is a little known synthesis element. It is thought to be a solid metal, but because it produces only a few atoms it is difficult to study. All of its isotopes have very short half-lives. There are 9 types of isotopes, the most stable is 270 H, and the half-life is 22 seconds.

The atomic weight of synthetic transuranic elements is based on the longest lifetime isotope. These atomic weights should be considered temporary as new isotopes with longer half-lives may be generated in the future. [View the Periodic Table of the Elements]

It is made by bombarding the atoms of the lead isotope 208 Pb with the ions of the iron isotope 58 Fe. The Darmstadt team uses a linear accelerator for shelling and produces 265 Hs and free neutrons

Since only a few ha were produced, there was no commercial use. Currently only scientific research

The volatile ha compound (arsenic tetraoxide) selected for gas phase chemistry research from the beginning is clear, but the chemical nature of hash has long been considered a difficult task. Isotopes were first synthesized in 1984 but until 1996 it was not until 1996 that isotopes with sufficient long-lived lives were synthesized for chemical studies. Unfortunately, this isotope 269H is indirectly synthesized by the collapse of 277 CN; the indirect synthesis method is not only disadvantageous for chemical studies, the reaction yield of the isotope 277 CN is low Area is only 1 pb), not enough arsenic is provided. Atoms are used for chemistry research. Direct synthesis of 269 Hs and 270 Hs in the reaction It seems that 248 Cm (26 Mg, xn) 274 - x Hs (x = 4 or 5) is expected to be 7 pb because the reaction cross section is slightly large.

The GSI team led by Peter Armbruster generated a Hassium isotope in nuclear fusion reaction by irradiating lead 208 with iron ions 58. The isotopic mass is 265, very unstable, with a half-life of only 2 ms. Experiments conducted by A. G. Demin and other researchers at the Russian Federation Atomic Energy Research Institute in Dubna showed that there are two Hassium isotopes, masses 263 and 264.

Hashium has neither stable isotopes nor natural isotopes. Several radioactive isotopes were synthesized in the laboratory by fusing two atoms or by observing the breakdown of heavier elements. The isotope atomic mass of 12 is in the range of 263 to 277 (excluding 272, 274 and 276), three of which Hassium - 265, Hassium - 267, Hassium - 269 are known to be metastable It has been reported. Most of them collapse mainly due to alpha collapse, but some spontaneous nuclear fission