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Isotopes of bohrium



Bohrium (Bh) has no stable isotopes. A standard atomic mass cannot be given.

Additional recommended knowledge

Bohrium has also been called nielsbohrium and eka-rhenium.

Table

nuclide
symbol
Z(p) N(n)  
isotopic mass (u)
 
half-life nuclear
spin
representative
isotopic
composition
(mole fraction)
range of natural
variation
(mole fraction)
excitation energy
260Bh 107 153 260.12197(62)# 0.3# ms
261Bh 107 154 261.12166(25)# 13(4) ms [12(+5-3) ms]
262Bh 107 155 262.12289(37)# 290(160) ms
262mBh 300(60) keV 14(4) ms
263Bh 107 156 263.12304(39)# 200# ms
264Bh 107 157 264.1246(3)# 1.3(5) s [0.44(+60-16) s]
265Bh 107 158 265.12515(41)# 0.9(+7-3) s
266Bh 107 159 266.12694(22)# 5(3) s
267Bh 107 160 267.12765(28)# 22(10) s [17(+14-6) s]
268Bh 107 161 268.12976(41)# 25# s
269Bh 107 162 269.13069(44)# 25# s
270Bh 107 163 270.13362(50)# 30# s
271Bh 107 164 271.13518(60)# 40# s
272Bh 107 165 272.13803(65)# 10(+12-4) s
273Bh 107 166 273.13962(89)# 90# min
274Bh 107 167 274.14244(84)# 90# min
275Bh 107 168 275.14425(70)# 40# min

Notes

  • Values marked # are not purely derived from experimental data, but at least partly from systematic trends. Spins with weak assignment arguments are enclosed in parentheses.
  • Uncertainties are given in concise form in parentheses after the corresponding last digits. Uncertainty values denote one standard deviation, except isotopic composition and standard atomic mass from IUPAC which use expanded uncertainties.

References

  • Isotope masses from Ame2003 Atomic Mass Evaluation by G. Audi, A.H. Wapstra, C. Thibault, J. Blachot and O. Bersillon in Nuclear Physics A729 (2003).
  • Isotopic compositions and standard atomic masses from Atomic weights of the elements. Review 2000 (IUPAC Technical Report). Pure Appl. Chem. Vol. 75, No. 6, pp. 683-800, (2003) and Atomic Weights Revised (2005).
  • Half-life, spin, and isomer data selected from these sources. Editing notes on this article's talk page.
    • Audi, Bersillon, Blachot, Wapstra. The Nubase2003 evaluation of nuclear and decay properties, Nuc. Phys. A 729, pp. 3-128 (2003).
    • National Nuclear Data Center, Brookhaven National Laboratory. Information extracted from the NuDat 2.1 database (retrieved Sept. 2005).
    • David R. Lide (ed.), Norman E. Holden in CRC Handbook of Chemistry and Physics, 85th Edition, online version. CRC Press. Boca Raton, Florida (2005). Section 11, Table of the Isotopes.


Isotopes of seaborgium Isotopes of bohrium Isotopes of hassium
Index to isotope pages
 
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Isotopes_of_bohrium". A list of authors is available in Wikipedia.
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