Seaborgium (Sg)
Seaborgium: The Element Honoring Glenn Seaborg
Seaborgium is a synthetic, radioactive metal that does not occur in nature. Only a few atoms have ever been made. It was named after Glenn Seaborg, a pioneering American chemist who helped discover many transuranium elements and reshaped the periodic table.
A Man-Made Element
Seaborgium is created in a heavy ion accelerator. Scientists first made it by bombarding californium-249 with oxygen-18 nuclei, producing about one atom per hour.
Because it is so rare and unstable—its longest-lived isotope lasts only about 1.9 minutes—seaborgium has no practical uses. Instead, it is studied to learn more about the behavior of superheavy elements at the edge of the periodic table.
Seaborgium has no biological role and is considered toxic due to its intense radioactivity.
History of Discovery
The discovery of seaborgium took place during the Cold War and became another US–Russia scientific rivalry:
1974 – American Claim: A team led by Albert Ghiorso at the Lawrence Berkeley National Laboratory (LBNL) in California reported creating element 106 by bombarding californium with oxygen.
1974 – Russian Claim: Around the same time, a team at the Joint Institute for Nuclear Research (JINR) in Dubna, Russia, announced they had made the element by bombarding lead with chromium.
Resolution (1997): After years of debate, the International Union of Pure and Applied Chemistry (IUPAC) credited the American team and officially named the element seaborgium—making Glenn Seaborg the first living person to have an element named after him.