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californium
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californium
The Oxford Pocket Dictionary of Current English
cal·i·for·ni·um
/ ˌkaləˈfôrnēəm/
•
n.
the chemical element of atomic number 98, a radioactive metal of the actinide series.
(Symbol: Cf)
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© The Oxford Pocket Dictionary of Current English 2008, originally published by Oxford University Press 2008.
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Californium (revised)
CALIFORNIUM (REVISED) Note: This article, originally published in 1998, was updated in 2006 for the eBook edition. Overview Californium is a transuranium element, or "beyond uranium" on the...said to be transuranium elements. Discovery and naming Californium was discovered in 1950 by a research team at the ...
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californium
californium [from California ], artificially produced, radioactive...b.p. about 1,470°C; density unknown; valence +3. Californium is a member of the actinide series of chemical elements...similar to those of lanthanum . Eighteen isotopes of californium are known, with half-lives ranging from about 40 ...
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Californium melting point: 900 ° C boiling point: Unknown density: Unknown most common ions...with accelerated helium ions in a cyclotron, to produce approximately 5,000 atoms of a californium isotope of mass 245 and a half-life of 44 minutes. Californium, like all the actinide elements heavier than ...
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californium
californium (symbol Cf) Radioactive metallic element of the actinide series , first made in 1950 by US nuclear chemist Glenn Seaborg...and colleagues at the University of California, Berkeley, by alpha-particle bombardment of the curium isotope Cm 242 . Californium presents biological dangers because one microgram ...
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