Berkelium Elemental Symbol
Berkelium



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Berkélium Berkelium Berkelio Berquélio Berkelio Berkelium

Berkelium Bohr ModelBerkelium is a Block F, Group 3, Period 7 element. The number of electrons in each of berkelium's shells is 2, 8, 18, 32, 27, 8, 2 and its electron configuration is [Rn] 5f9 7s2. The berkelium atom has a radius of 170.pm. It is radioactive and harmful as a result. In its elemental form, berkelium's CAS number is 7440-40-6. Berkelium is produced in nature by beta decay and neutron capture in highly concentrated uranium-bearing deposits. It is the rarest naturally occurring element. Berkelium was discovered by Stanley G. Thompson, Albert Ghiorso and Glenn T. Seaborg at the Lawrence Berkeley Natinal Laboratory in 1949. It was the fifth synthetic transuranium element of the actinide series to be discovered.

Berkelium information, including technical data, safety data and its high purity properties, research, applications and other useful facts are discussed below. Scientific facts such as the atomic structure, ionization energy, abundance on earth, conductivity and thermal properties are included.


  • Properties
  • Research
  • Isotopes
  • Other Elements

Berkelium Properties


GENERAL PROPERTIES   PHYSICAL PROPERTIES  
Symbol: Bk Melting Point: 986 oC, 1806.8 oF, 1259.15 K
Atomic Number: 97 Boiling Point: N/A
Atomic Weight: 247 Density: 14790 kg m-3
Element Category: Actinide Liquid Density @ Melting Point: N/A
Group, Period, Block: n/a, 7, f Specific Heat: N/A
    Heat of Vaporization N/A
CHEMICAL STRUCTURE Heat of Fusion N/A
Electrons: 97 Thermal Conductivity: 10 W·m−1·K−1
Protons: 97 Thermal Expansion: N/A
Neutrons: 150 Electrical Resistivity: N/A
Electron Configuration: [Rn] 5f97s2 Electronegativity: 1.3 (Pauling scale)
Atomic Radius: 170 pm Tensile Strength: N/A
Covalent Radius: N/A Molar Heat Capacity: N/A
Van der Waals radius: N/A Young's Modulus: N/A
Oxidation States: 3, 4 Shear Modulus: N/A
Phase: Solid Bulk Modulus: N/A
Crystal Structure: hexagonal close-packed Poisson Ratio: N/A
Magnetic Ordering: paramagnetic Mohs Hardness: N/A
1st Ionization Energy: 601 kJ·mol−1 (estimated) Vickers Hardness: N/A
2nd Ionization Energy: N/A Brinell Hardness: N/A
3rd Ionization Energy: N/A Speed of Sound: N/A
       
IDENTIFIERS   MISCELLANEOUS  
CAS Number: 7440-40-6 Abundance in typical human body, by weight: N/A
ChemSpider ID: 22409 Abundance in typical human body, by atom: N/A
PubChem CID: 23971 Abundance in universe, by weight: N/A
MDL Number: N/A Abundance in universe, by atom: N/A
EC Number: N/A Discovered By: Lawrence Berkeley Nat'l Laboratory
Beilstein Number: N/A Discovery Date: 1949
SMILES Identifier: [Bk]  
InChI Identifier: InChI=1S/Bk Other Names: Berkelio, Berquélio
InChI Key: PWVKJRSRVJTHTR-UHFFFAOYSA-N  
       
       
       
       
       


Recent Research & Development for Berkelium

  • H. Latrous, J. Oliver, Self-diffusion coefficients and structure of the trivalent transplutonium ion berkelium in aqueous solution, Journal of Molecular Liquids, Volume 81, Issue 2, July 1999
  • Leon Fuks, Yurii M. Kulyako, Dmitrii A. Malikov, Stability Constants of Acetylacetonate Complexes of Tetravalent Berkelium, Mendeleev Communications, Volume 5, Issue 2, 1995
  • , Metabolic data for berkelium, Annals of the ICRP, Volume 19, Issue 4, 1988
  • Gerard F. Payne, Joseph R. Peterson, Possible stabilization of the tetravalent oxidation state of berkelium and californium in acetonitrile with triphenylarsine oxide, Inorganica Chimica Acta, Volume 139, Issues 1–2, 1 December 1987
  • J.K Gibson, R.G Haire, Preparation and X-ray diffraction studies of hydrides of curium, berkelium and californium, Journal of the Less Common Metals, Volume 127, January 1987
  • D.E. Hobart, J.R. Peterson, The chemistry of berkelium: A review, Journal of the Less Common Metals, Volume 121, July 1986
  • J.K. Gibson, R.G. Haire, Preparation and X-ray diffraction studies of berkelium hydrides, Journal of the Less Common Metals, Volume 109, Issue 2, 15 July 1985
  • R.G Haire, J.R Peterson, U Benedict, C Dufour, X-ray diffraction of berkelium metal under pressure to 57 GPa, Journal of the Less Common Metals, Volume 102, Issue 1, September 1984
  • , Berkelium, Annals of the ICRP, Volumes 11–13, Part 2, 1983
  • , Berkelium, Annals of the ICRP, Volume 8, Issues 1–3, 1982


Berkelium Isotopes


Berkelium is an artificial element. It has no stable isotopes.