1) Atomic number 98 2) Chemical element 3) Element discovered in 1950 4) Element number 98 5) Element with the symbol Cf 6) Metal 7) Metallic element 8) Synthetic element
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1) Cf
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https://www.crosswordclues.com/clue/californium
Californium is a radioactive metallic chemical element with the symbol Cf and atomic number 98. The element was first made in 1950 at the University of California Radiation Laboratory in Berkeley, by bombarding curium with alpha particles (helium-4 ions). It is an actinide element, the sixth transuranium element to be synthesized, and has the seco...
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http://en.wikipedia.org/wiki/Californium
synthetic chemical element of the actinoid series of the periodic table, atomic number 98. Not occurring in nature, californium (as the isotope ... [1 related articles]
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http://www.britannica.com/eb/a-z/c/8
(Cf) A radioactive, metallic element of the actinide series, and also a transuranic element, first made in 1950 at the University of California at Berkeley by alpha particle bombardment of the curium isotope
242Cu. Californium presents biological dangers b...
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<chemical> Californium. A man-made radioactive actinide with atomic symbol cf, atomic number 98, and atomic weight 251. Its valence can be +2 or +3. Californium has medical use as a radiation source for radiotherapy. ... Chemical name: Californium ... (12 Dec 1998) ...
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http://www.encyclo.co.uk/local/20973
(Cf) (kal″ĭ-for´ne-әm) a chemical element, atomic number 98, atomic weight 249.
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http://www.encyclo.co.uk/local/21001
(Cf) Type: Term Pronunciation: kal′i-fōr′nē-ŭm Definitions: 1. An artificial transuranium element, symbol Cf, atomic no. 98, atomic wt. 251.08; half-life of 251Cf (the most stable known isotope) is 900 years.
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[
n] - a radioactive transuranic element
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http://www.webdictionary.co.uk/definition.php?query=californium
A man-made element with an atomic number of 98. Symbol Cf
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https://www.encyclo.co.uk/local/20687
Cf noun a radioactive transuranic element; discovered by bombarding curium with alpha particles
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https://www.encyclo.co.uk/local/20974
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