berkelium
[ber-kee-lee-uh m]
- a transuranic element. Symbol: Bk; atomic number: 97; atomic weight: 249 (?).
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Origin of berkelium
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
berkelium
- a metallic transuranic element produced by bombardment of americium. Symbol: Bk; atomic no: 97; half-life of most stable isotope, 247 Bk: 1400 years; valency: 3 or 4; relative density: 14 (est)
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Word Origin
C20: named after Berkeley 1, where it was discovered
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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berkelium
(bər-kē′lē-əm, bûrk′lē-əm)- A synthetic radioactive element. Its most stable isotope, Bk 247, has a half-life of 1,380 years. Atomic number 97.
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The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
berkelium
[bər-kē′lē-əm, bûrk′lē-əm]
- A synthetic, radioactive metallic element of the actinide series that is produced from americium, curium, or plutonium. Its most stable isotope has a half-life of about 1,400 years. Atomic number 97; melting point 986°C; valence 3, 4. See Periodic Table.
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The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.