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berkelium [Bk]

Named after Berkeley, California, its place of discovery. First produced in 1949 by Stanley G Thompson, Albert Ghiorso, & Glenn T Seaborg. Occurrence: 1) does NOT occur naturally 2) made artificially by bombarding americium-241 with alpha-particles 3) pure berkelium has not yet been isolated 4) only berkelium chloride has been created in a visible amount 3 nanograms Characteristics: 1) silvery solid metal 2) highly radioactive Uses: none

Related

periodic table

General

actinide radioactive element

Properties

SIZE: AW = 247.07 atomic number VALUE: 97 VALENCE: RN 5F8 6D1 7S2

References

  1. Webster's Ninth New Collegiate Dictionary, Miriam- Webster Inc. Springfield, MA 1990
  2. Chemical & Engineering News, Sept 8, 2003