Hassium
Hassium is a chemical element with the symbol Hs and the atomic number 108. It has been produced in a laboratory only in very small quantities. Natural occurrences of the element have been hypothesised but never found. One of its isotopes, 270Hs, has magic numbers of both protons and neutrons for deformed nuclei.
About Hassium in brief
Hassium is a chemical element with the symbol Hs and the atomic number 108. It has been produced in a laboratory only in very small quantities by fusing heavy nuclei with lighter ones. Natural occurrences of the element have been hypothesised but never found. One of its isotopes, 270Hs, has magic numbers of both protons and neutrons for deformed nuclei, which gives it greater stability against spontaneous fission. The chemical properties of hassium have been only partly characterized, but they compare well with the chemistry of the other group 8 elements. It behaves as the heavier homologue to osmium, reacting readily with oxygen to form a volatile tetroxide. The heaviest atomic nuclei are created in nuclear reactions that combine two other nuclei of unequal size into one; roughly, the more unequal the two nuclei in terms of mass, the greater the possibility that the two react. Nuclei can only fuse into one if they approach each other closely enough; normally, nuclei repel each other due to electrostatic repulsion. To lose its excitation energy and reach a more stable state, a compound nucleus either fissions or ejects one or several neutrons, which carry away the energy. In the separator, the newly produced nucleus is separated from other nuclides and transferred to a surface-barrier detector, which stops the nucleus. The exact location of the upcoming nucleus on the detector is marked by its energy and the time of its arrival. Once detected, the nucleus must survive about 10−6 seconds in order to be recorded.
Once the nucleus is recorded, the decay is recorded and the location and the energy of the decay are measured again. However, its range is very short; as nuclei become larger, its influence on the outermost influence on its outermost nucleus becomes larger. So far, the heaviest elements are only observed to decay via spontaneous decay via such modes as alpha decay and alpha decay via alpha decay. It is predicted that such decay modes are theoretically predicted and so far so far have been observed to primarily be caused by repulsion and decay modes that are caused by alpha decay, such as beta decay and gamma decay. The element has unlimited range, as it has unlimited decay modes, as well as unlimited range of theoretically predicted decay modes. It was named after the German state of Hesse, home to the facility in 1992; this name was accepted as final in 1997. The principal innovation that led to the discovery of Hasium was the technique of cold fusion, in which the fused nuclei did not differ by mass as much as in earlier techniques. The technique was first tested at the Joint Institute for Nuclear Research in Dubna, Moscow Oblast, Russian SFSR, Soviet Union, in 1974. The latter experiment resulted in a claim that element 108 had been produced. In 1984, a synthesis claim followed from the Gesellschaft für Schwerionenforschung in Darmstadt, West Germany.
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This page is based on the article Hassium published in Wikipedia (as of Dec. 26, 2020) and was automatically summarized using artificial intelligence.
