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Home > Art, Film & Photography > Periode-8-Element: Ununennium, Unbihexium, Unbinilium, Unbioctium, Unbiquadium, Unbitrium, Unbiennium, Unbibium, Unbiseptium, Unbiunium
Periode-8-Element: Ununennium, Unbihexium, Unbinilium, Unbioctium, Unbiquadium, Unbitrium, Unbiennium, Unbibium, Unbiseptium, Unbiunium

Periode-8-Element: Ununennium, Unbihexium, Unbinilium, Unbioctium, Unbiquadium, Unbitrium, Unbiennium, Unbibium, Unbiseptium, Unbiunium


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About the Book

Kapitel: Ununennium, Unbihexium, Unbinilium, Unbioctium, Unbiquadium, Unbitrium, Unbiennium, Unbibium, Unbiseptium, Unbiunium, Unbipentium, Untrinilium, Untriunium, Untribium. Aus Wikipedia. Nicht dargestellt. Auszug: Ununennium (pronounced; officially, the two initial u's are to be pronounced ), or eka-francium, is the temporary name of a hypothetical chemical element in the periodic table that has the temporary symbol Uue and has the atomic number 119. Since it is below the alkali metals it might have properties similar to those of francium or caesium. Like other alkali metals, it should be extremely reactive with water and air. A predicted oxidation state is 1. Ununennium would be the first element in the eighth period of the periodic table and the seventh alkali metal. The synthesis of ununennium was attempted in 1985 by bombarding a target of einsteinium-254 with calcium-48 ions at the superHILAC accelerator at Berkeley, California. No atoms were identified, leading to a limiting yield of 300 nb. It is highly unlikely that this reaction will be useful given the extremely difficult task of making sufficient amounts of Es-254 to make a large enough target to increase the sensitivity of the experiment to the required level, due to the rarity of the element, and extreme rarity of the isotope. The alpha-decay half-lives of 1700 nuclei with 100 Z 130 have been calculated in a quantum tunneling model with alpha-decay Q-values from different mass estimates. The alpha-decay half-lives predicted for 119 are of the order of micro-seconds. The highest value of the alpha-decay half-life predicted in the quantum tunneling model with the mass estimates from a macroscopic-microscopic model is ~485 microseconds for the isotope 119. For 119 it is ~163 microseconds. The below table contains various combinations of targets and projectiles which could be used to form compound nuclei with an atomic number of 119. The below table contains...http: //booksllc.net/?l=de


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Product Details
  • ISBN-13: 9781159245269
  • Publisher: Books LLC
  • Publisher Imprint: Books LLC
  • Height: 152 mm
  • No of Pages: 44
  • Spine Width: 3 mm
  • Weight: 77 gr
  • ISBN-10: 1159245266
  • Publisher Date: 22 Jul 2010
  • Binding: Paperback
  • Language: English
  • Returnable: N
  • Sub Title: Ununennium, Unbihexium, Unbinilium, Unbioctium, Unbiquadium, Unbitrium, Unbiennium, Unbibium, Unbiseptium, Unbiunium
  • Width: 229 mm


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