Seaborgium

In June 1974, members of the Joint Institute for Nuclear Research in Dubna, U.S.S.R., reported their discovery of Element 106, which they reported to have synthesized. Glenn Seaborg was part of this group, and the element was named in his honor. Seaborgium is often still referred to as Element 106 because the international committee in charge of names changed the rules. They decided retroactively it couldn t be named after a living person. 

Francium Radium Lawrendum Rutbofordium Dubnram Seaborgium Bohnum Hassium Meitnerium Darmstadnum Roentgenium ... 

THE NEW VISION INCLUDES A SAFE, EFFICIENT AND RELIABLE PRODUCTION COMPLEX FOR NUCLEAR MATERIALS FOR IMPORTANT NATIONAL PROGRAMS SUCH AS DEFENSE, SPACE EXPLORATION, MEDICINE, INDUSTRIALNEEDS AND RESEARCH,INCLUDINGPRODUCTION AND STUDY OF TRANS-SEABORGIUM ELEMENTS. 

Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium ... 

Seaborgium - the atomic number is 106 and the chemical symbol is Sg. The name derives from the American chemist Glenn Theodore Seaborg , who led a team that first synthesized a number of transuranium elements. The element Seaborgium was first synthesized by American scientists from the University of California lab in Berkeley, California imder Albert Ghiorso, who used the nuclear reaction Cf ( 0,4n) Sg. The longest half-life associated with this unstable element is 21 second Sg. 

ORIGIN OF NAME Named after and in honor of the nuclear chemist Glenn T. Seaborg. ISOTOPES There a total of 16 Isotopes of unnilhexium (seaborgium) with half-lives ranging from 2.9 milliseconds to 22 seconds. All are artificially produced and radioactive, and they decay by spontaneous fission (SF) or alpha decay. 

The melting point, boiling point, and density of seaborgium are unknown. What is known is that its isotopes are radioactive metals with short half-lives and that these isotopes decay by fission and alpha emissions. 

Similar to several other elements in both the actinide and the transactinide series, there was some question as to which laboratory first discovered unnilhexium (seaborgium). In June... 

None now known. However, because seaborgium is a metal, it might be possible for it to form compounds with some nonmetals such as the halogens. 

The hazards for seaborgium are the same as for any radioactive isotopes, but since only a few short-lived atoms are produced, there is no danger to the public. 

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 ... 

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