seaborgium

sea·bor·gi·um  (s-bôrg-m)

n. Symbol Sg

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.

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[After Glenn Theodore Seaborg.]

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seaborgium [ˈsiːbɔːgɪəm]

n

(Chemistry / Elements & Compounds) a synthetic transuranic element, synthesized and identified in 1974. Symbol: Sg; atomic no.: 106

[named after Glenn Seaborg (1912-99), US chemist and nuclear physicist]

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seaborgium  (s-bôrg-m)

Symbol Sg

A synthetic, radioactive element that is produced by bombarding californium with oxygen ions or bombarding lead with chromium ions. Its 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. Atomic number 106. See Periodic Table.

Thesaurus

Noun

1.

seaborgium - a transuranic element atomic number 106, element 106, Sg chemical element, element - any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter