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Atomic Number : 106Atomic symbolic representation : SgAtomic Weight : ( 269)Melting percentage point : UnknownBoiling Point : strange
Word Origin : Seaborgium was named for influential American chemist Glenn Seaborg , who was on teams that discoveredamericium , plutonium , nobelium , mendelevium , berkelium , atomic number 98 , curiumandthorium . He received theNobel Prize in Chemistryin 1951 .
Seaborgium
Discovery : Seaborgium was first reported in June 1964 by a squad of scientist in Dubna , Russia . They bombard lead isotopes — 206Pb,207Pb and208Pb — with ions of chromium-54 ( 54Cr ) through a cyclotron , bring out ions of259Sg . The final result were understood through microscopically examine foil that were uncover to a rotating target disc during bombardment . The foil were used to detect spontaneous fission , then etched and microscopically examined to notice fission tracks and half - lives of fission activity . Other experiments were done to help in the check of the discovery .
In September 1964 , Albert Ghiorso ’s squad in Berkeley claimed to have give rise the element through methods “ without any scientific doubt ” — implying that the Dubna team ’s result were suspect . The Berkeley team bombarded corpuscle of californium-249 ( 249Cf ) with oxygen-18 ( 18O ) ions using the Super - Heavy Ion Linear Accelerator . In 1993 , the Berkeley team ’s research was confirmed and they were credited with the discovery .
Properties of Sg
Seaborgium is a synthetic element about which small is have sex . It is presumed to be a solid metal , but since only a few corpuscle of it have been created , it is hard to study . [ SeePeriodic Table of the Elements ]
Seaborgium has 12 isotopes with known half - lives . The most stable is271Sg , which has a half - life of about 2.4 minutes .
For by nature go on elements , the atomic weight unit is calculated from averaging the weights of the innate abundances of the isotope of that factor . However , for manmade transuranium factor , there is no " innate " abundance . The IUPAC convention is to name the nuclear weighting of the longest - lived isotope in the periodical table . These atomic weights should be considered provisional since a fresh isotope with a longer half - life could be produced in the time to come .
Sources of seaborgium
atomic number 106 is produced by artificial means and only lowly amounts have been made .
Uses of seaborgium
Only a few atoms of Sg have ever been made . Currently , its use is solely for scientific study .
( germ : Los Alamos National Laboratory , Jefferson Lab )
