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Hassium

Francium Radium Lawrendum Rutbofordium Dubnram Seaborgium Bohnum Hassium Meitnerium Darmstadnum Roentgenium ... [Pg.1042]

Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium ... [Pg.119]

Francium Radium Actinium Rutherfordiurr Dubnium Seaborgiurr Bohrium Hassium Meitnerium... [Pg.358]

Hassium (Hs), l 492t HASTELLOY alloys, 17 102, 103 Hastelloy B, 13 519 Hastelloy B-2, 23 784-785 Hastelloy-C, 14 14 Hastelloy C series alloys, 13 520 Hatch Act of 1887, 24 353-354 Hatta number, 21 345 Haulage distances, 15 60-61 Hausmannite, 15 540 Hayashi-Williams equation, 22 561 Haylage, 10 863... [Pg.419]

Hassium - the atomic number is 108 and the chemical symbol is Hs. The name derives from the Latin Hassia for the German state of Hesse , whose former capital was Darmstadt. The element was first synthesized by German physicists at the GSI (Center for Heavy-Ion Research) Lab at Darmstadt, Germany in 1984 using the nuclear reaction ° Pb ( Fe, n) Hs. The longest half-life associated with this unstable element is 11 minute Hs. [Pg.11]

ISOTOPES There are a total of eight isotopes for unniloctium (hassium) with atomic masses ranging from 263 to 277 and half-lives ranging from 0.8 milliseconds (Uno-264) to 12 minutes (Uno-277). [Pg.347]

Most of the chemical and physical properties of imniloctium (hassium) are unknown. What is known is that its most stable isotope (hassium-108) has the atomic weight (mass) of about 277. Hs-277 has a half-life of about 12 minutes, after which it decays into the isotope seaborgium-273 through either alpha decay or spontaneous fission. Hassium is the last element located at the bottom of group 8, and like element 107, it is produced by a cold fusion process that in hassium s case is accomplished by slamming iron (Fe-58) into particles of the isotope of lead (Pb-209), along with several neutrons, as follows ... [Pg.348]

Considering that such a small amount of hassium is produced, it has no commercial uses beyond basic research in nuclear laboratories. [Pg.348]

No common compounds of hassium have been reported. [Pg.348]

Because only a few atom of hassium are produced at a time, radiation hazard is not a problem. [Pg.348]

In December 1998 the Lawrence Berkeley Laboratory sent a supply of plutonium-244 and calcium-48 to Russian scientists at the Joint Institute of Nuclear Research in Dubna, Russia. The Russians bombarded the plutonium with ions of calcium, which, after some time, produced a single atom of ununquadium-289. Uuq has a half-life of just 30 seconds, after which it decays successively into element 112 (ununbium), element 110, (darmstadtium), and element 108 (hassium). The Russian nuclear laboratory later synthesized several atoms of other isotopes of Ununquadium. [Pg.359]

Hassium (Unniloctium) Uno or Hs 1984 (Darmstadt, Germany) Peter Armbruster and Gottfried Munzenberg (both German) 347... [Pg.400]

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Hassium (Unniloctium)

Hassium (element

Hassium (element chemistry

Hassium (element isotopes

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