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nobelium definitions
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WordNet (r) 3.0 (2005)
n
1: a radioactive transuranic element synthesized by bombarding curium with carbon ions; 7 isotopes are known [syn: nobelium, No, atomic number 102]
Merriam Webster's
noun Etymology: New Latin, from Alfred B. Nobel Date: 1957 a radioactive metallic element produced artificially — see element table
Dictionary of the Elements
nobelium
Symbol: No
Atomic number: 102
Atomic weight: (254)
Radioactive metallic transuranic element, belongs to the actinoids. Seven known isotopes exist, the most stable being No-254 with a half-life of 255 seconds. First identified with certainty by Albert Ghiorso and Glenn T. Seaborg in 1966. Unnilbium has been proposed as an alternative name.
Oxford Reference Dictionary
n. Chem. a radioactive transuranic metallic element. Usage: Symb.: No. Etymology: Nobel (see NOBEL PRIZE) + -IUM
