Name Seaborgium
Symbol Sg
Atomic Number 106
Atomic Mass 263.0 atomic mass units
Number of Protons 106
Number of Neutrons 157
Number of Electrons 106
Melting Point Unknown
Boiling Point Unknown
Density Unknown
Normal Phase Synthetic
Family Transition Metals
Period 7
Cost Unknown



Origin of Name After Glenn T. Seaborg, American chemist and nuclear physicist
Date and Place of Discovery In June 1974 at Lawrence Radiation Laboratory on the University of California campus at Berkeley
In September 1974 at the Joint Institute for Nuclear Research at Dubna, Russia
Discovered by Led by Albert Ghiorso in America
Led by Georgy Nikolaevich Flerov in Russia
Common Compounds No known compounds
Interesting facts
  • It has 12 known isotopes.
  • When elements are named after people, it is usually after they have passed on.  Glenn Seaborg was still alive when they decided on this elements' name.
Common Uses Since only a few atoms of seaborgium have ever been made, there are no uses for seaborgium outside of basic scientific research.


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