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The Mineralogy of Berkelium

About Berkelium
Berkelium is a radioactive transuranic element that has only been produced in nuclear reactors. It is possible that some berkelium and other transuranic elements were created in the natural nuclear reactor in Oklo, Gabon.
General Properties
Symbol:Bk
Atomic Number:97
Standard atomic weight (Ar):[247]
Electron configuration:[Rn] 5f9 7s2
Photos
<
13 milligrams of berkelium 249
>
Atomic Properties
Electronegativity (Pauling scale):1.3
Atomic Radius:170 pm
Ionic Radius:96 pm (+3)
1st Ionization energy:601 kJ/mol
Oxidation States:3,4
Physical Properties
Standard State:solid
Bonding Type:metallic
Melting Point:1323 K
Density:14.78 g/cm3
Metal/Non-Metal:actinoid
Main isotopes of Berkelium
Isotope% in NatureHalf LifeDecay typeDecay product
245Bksynthetic4.94dε245Cm
α241Am
246Bksynthetic1.8dα242Am
ε246Cm
247Bksynthetic1380yα243Am
248Bksynthetic>300yα244Am
249Bksynthetic330dα245Am
Spontaneous fission
β−249Cf
Other Information
Year Discovered:1949
Discovered By:Lawrence Berkeley National Laboratory
Named For:after Berkeley, California, where it was discovered
CPK color coding:#8A4FE3
External Links:WikipediaWebElementsLos Alamos National LaboratoryTheodore Gray's PeriodicTable.com
Simple Compounds
Fluoridesberkelium trifluorideBkF3+3
berkelium tetrafluorideBkF4+4
Chloridesberkelium trichlorideBkCl3+3
Iodidesberkelium triiodideBkI3+3
Oxidesberkelium oxideBkO+2
berkelium dioxideBkO2+4
diberkelium trioxideBk2O3+3
Periodic Table
1H 2He
3Li 4Be 5B 6C 7N 8O 9F 10Ne
11Na 12Mg 13Al 14Si 15P 16S 17Cl 18Ar
19K 20Ca 21Sc 22Ti 23V 24Cr 25Mn 26Fe 27Co 28Ni 29Cu 30Zn 31Ga 32Ge 33As 34Se 35Br 36Kr
37Rb 38Sr 39Y 40Zr 41Nb 42Mo 43Tc 44Ru 45Rh 46Pd 47Ag 48Cd 49In 50Sn 51Sb 52Te 53I 54Xe
55Cs 56Ba 57La 72Hf 73Ta 74W 75Re 76Os 77Ir 78Pt 79Au 80Hg 81Tl 82Pb 83Bi 84Po 85At 86Rn
87Fr 88Ra 89Ac 104Rd 105Db 106Sg 107Bh 108Hs 109Mt 110Ds 111Rg 112Cn 113Nh 114Fl 115Mc 116Lv 117Ts 118Og
 
58Ce 59Pr 60Nd 61Pm 62Sm 63Eu 64Gd 65Tb 66Dy 67Ho 68Er 69Tm 70Yb 71Lu
90Th 91Pa 92U 93Np 94Pu 95Am 96Cm 97Bk 98Cf 99Es 100Fm 101Md 102No 103Lr
Default Categories CPK Electronegativity Atomic Radius Lowest Oxidation Highest Oxidation Crustal Abundance Goldschmidt Mineral Species
Curium << Berkelium >> Californium


Spotted a mistake/omission? - These pages are a work in progress, so please send all comments/corrections to jolyon@mindat.org. Thank you.

Constants and physical property data from:

David R. Lide (ed.), CRC Handbook of Chemistry and Physics, 85th Edition. CRC Press. Boca Raton, Florida (2005).
Kaye and Laby Tables of Physical & Chemical Constants (2005). Section 3.1.3, Abundances of the elements
A. Earnshaw, N. Greenwood, Chemistry of the Elements, 2nd edition, Butterworth-Heinemann, (1997)
Thomas J. Ahrens (ed.), Global Earth Physics : A Handbook of Physical Constants, American Geophysical Union (1995)
L.B. Railsback, An Earth Scientist's Periodic Table of the Elements and Their Ions : Geology 31:9 p737-740 (2003)
Emsley, J. Nature's Building Blocks: An A-Z Guide to the Elements. New York: Oxford University Press (2001)
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