1) Atomic number 97 2) Chemical element 3) Element discovered in 1949 4) Element number 97 5) Element with the symbol Bk 6) Metal 7) Metallic element 8) Synthetic element
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1) Bk
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https://www.crosswordclues.com/clue/berkelium
Berkelium is a transuranic radioactive chemical element with the symbol Bk and atomic number 97, a member of the actinide and transuranium element series. It is named after the city of Berkeley, California, the location of the University of California Radiation Laboratory where it was discovered in December 1949. This was the fifth transuranium el...
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http://en.wikipedia.org/wiki/Berkelium
synthetic chemical element of the actinoid series of the periodic table, atomic number 97. Not occurring in nature, berkelium (as the isotope ... [1 related articles]
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http://www.britannica.com/eb/a-z/b/52
(Bk) A synthetic, radioactive, metallic element of the actinide series; also a transuranic element. It was first made in 1949 by alpha particle bombardment of americium-241 by S. G. Thompson and coworkers at the University of California at Berkeley (after which it is named). It ...
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http://www.daviddarling.info/encyclopedia/B/berkelium.html
<chemical> Berkelium. A man-made radioactive actinide with atomic symbol bk, atomic number 97, and atomic weight 247. Its valence can be +3 or +4. Twelve isotopes have been produced with mass numbers 240-251. ... Chemical name: Berkelium ... (12 Dec 1998) ...
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(Bk) (burk´le-әm) a chemical element, atomic number 97, atomic weight 247.
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http://www.encyclo.co.uk/local/21001
(Bk) Type: Term Pronunciation: berk′lē-um Definitions: 1. An artificial transuranium radioactive element; atomic no. 97, atomic wt. 247.07.
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Berkelium is a radioactive metallic element produced by bombarding americium 241 with helium ions. It has the symbol Bk.
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http://www.probertencyclopaedia.com/browse/GB.HTM
[
n] - a radioactive transuranic element
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http://www.webdictionary.co.uk/definition.php?query=berkelium
A transuranic element and member of the actinide series. Symbol BkDiscoveredFirst synthesized in 1949 by the American scientific team under the American chemist Glenn T. Seaborg
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https://www.encyclo.co.uk/local/20687
Bk noun a radioactive transuranic element; discovered by bombarding americium with helium
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https://www.encyclo.co.uk/local/20974
a transuranic element. Symbol: Bk; at. no.: 97; at. wt.: 249 (?).
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https://www.infoplease.com/dictionary/berkelium
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