American Heritage® Dictionary of the English Language, Fourth Edition
- n. An artificially produced radioactive element with atomic number 106 whose most long-lived isotopes have mass numbers 259, 261, 263, 265, and 266 with half-lives of 0.9, 0.23, 0.8, 16, and 20 seconds, respectively. Also called unnilhexium. See Table at element.
- n. a transuranic element
- Named for Glenn T. Seaborg. (Wiktionary)
- After Glenn Theodore Seaborg. (American Heritage® Dictionary of the English Language, Fourth Edition)
“Shortly after the official 1997 recognition of the name seaborgium for element 106, Jeffrey Winters, writing in the January 1998 issue of Discover Magazine, made the following observation:”
“HEN BERKELEY CHEMISTS discovered element 106 and named it seaborgium for their colleague Glenn Seaborg, the nuclear physicist elated.”
“The Lawrence Berkeley Laboratory has produced a dozen superheavy elements called transuranics and bear such names as berkelium, californium, lawrencium and seaborgium.”
“Researchers at Lawrence Berkeley National Laboratory in California saw the isotopes of rutherfordium, seaborgium, hassium, darmstadtium, and copernicium by watching the decay of the yet-to-be-named element 114, a synthetic element first produced about a decade ago.”
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