Hassium

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Hassium,  108Hs
General properties
Appearance silvery (predictit)[1]
Mass nummer 270 (most stable isotope)
Hassium in the periodic cairt
Hydrogen Helium
Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon
Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon
Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Airn Cobalt Nickel Capper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton
Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Siller (element) Cadmium Indium Tin Antimony Tellurium Iodine Xenon
Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gowd Mercur (element) Thallium Leid (element) Bismuth Polonium Astatine Radon
Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Ununtrium Flerovium Ununpentium Livermorium Ununseptium Ununoctium
Os

Hs

(Uhn)
bohriumhassiummeitnerium
Atomic nummer (Z) 108
Group group 8
Period period 7
Element category   transition metal
Block d-block
Electron confeeguration [Rn] 5f14 6d6 7s2 (predictit)[2]
Electrons per shell
2, 8, 18, 32, 32, 14, 2 (predictit)
Pheesical properties
Phase (at STP) solit (predicted)[3]
Density (near r.t.) 40.7 g/cm3 (predicted)[2][4]
Atomic properties
Oxidation states 8, (6), (5), (4), (3), (2)[1][2][4][5] ​(parenthesized oxidation states are predictions)
Ionisation energies
  • 1st: 733.3 kJ/mol
  • 2nd: 1756.0 kJ/mol
  • 3rd: 2827.0 kJ/mol
  • (more) (aw estimatit)[2]
Atomic radius empirical: 126 pm (estimatit)[2]
Covalent radius 134 pm (estimatit)[6]
Miscellanea
Creestal structurhexagonal close-packed (hcp)
Hexagonal close-packed creestal structur for hassium

(predictit)[3]
CAS Nummer 54037-57-9
History
Namin after Hassia, Laitin for Hesse, Germany, whaur it was discovered[1]
Diskivery Gesellschaft für Schwerionenforschung (1984)
Main isotopes o hassium
Iso­tope Abun­dance Hauf-life (t1/2) Decay mode Pro­duct
277Hs syn 2 s SF
277mHs ? syn ~130 s? SF
271Hs syn ~4 s α 267Sg
270Hs syn 3.6 s α 266Sg
269Hs syn 9.7 s α 265Sg
| references | in Wikidata

Hassium is a chemical element wi seembol Hs an atomic nummer 108, named efter the German state o Hesse.

References[eedit | eedit soorce]

  1. 1.0 1.1 1.2 Emsley, John (2011). Nature's Building Blocks: An A-Z Guide to the Elements (New ed.). New York, NY: Oxford University Press. p. 215–7. ISBN 978-0-19-960563-7. 
  2. 2.0 2.1 2.2 2.3 2.4 Hoffman, Darleane C.; Lee, Diana M.; Pershina, Valeria (2006). "Transactinides and the future elements". In Morss; Edelstein, Norman M.; Fuger, Jean. The Chemistry of the Actinide and Transactinide Elements (3rd ed.). Dordrecht, The Netherlands: Springer Science+Business Media. ISBN 1-4020-3555-1. 
  3. 3.0 3.1 Östlin, A.; Vitos, L. (2011). "First-principles calculation of the structural stability of 6d transition metals". Physical Review B. 84 (11). Bibcode:2011PhRvB..84k3104O. doi:10.1103/PhysRevB.84.113104. 
  4. 4.0 4.1 Fricke, Burkhard (1975). "Superheavy elements: a prediction of their chemical and physical properties". Recent Impact of Physics on Inorganic Chemistry. 21: 89–144. doi:10.1007/BFb0116498. Retrieved 4 October 2013. 
  5. Düllmann, Christoph E. (31 October 2008). "Investigation of group 8 metallocenes @ TASCA" (PDF). 7th Workshop on Recoil Separator for Superheavy Element Chemistry TASCA 08. Gesellschaft für Schwerionenforschung. Retrieved 25 March 2013. 
  6. Robertson, Murray (2011). "Chemical Data: Hassium". Visual Elements Periodic Table. Royal Society of Chemistry. Retrieved 28 November 2012. 
  7. "Hassium". The Periodic Table of Videos. The University of Nottingham. Retrieved 2012-10-19.