Isotopes of boron

From Wikipedia, the free encyclopedia

Boron (B)
Standard atomic mass: 10.811(7) u

[edit] 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
6B 5 1 6.04681(75)#
7B 5 2 7.02992(8) 350(50)E-24 s [1.4(2) MeV] (3/2-)
8B 5 3 8.0246072(11) 770(3) ms 2+
9B 5 4 9.0133288(11) 800(300)E-21 s [0.54(21) keV] 3/2-
10B 5 5 10.0129370(4) STABLE 3+ 0.199(7) 0.18929-0.20386
11B 5 6 11.0093054(4) STABLE 3/2- 0.801(7) 0.79614-0.81071
12B 5 7 12.0143521(15) 20.20(2) ms 1+
13B 5 8 13.0177802(12) 17.33(17) ms 3/2-
14B 5 9 14.025404(23) 12.5(5) ms 2-
15B 5 10 15.031103(24) 9.87(7) ms 3/2-
16B 5 11 16.03981(6) <190E-12 s [<0.1 MeV] 0-
17B 5 12 17.04699(18) 5.08(5) ms (3/2-)
18B 5 13 18.05617(86)# <26 ns (4-)#
19B 5 14 19.06373(43)# 2.92(13) ms (3/2-)#

[edit] Notes

  • The precision of the isotope abundances and atomic mass is limited through variations. The given ranges should be applicable to any normal terrestrial material.
  • Commercially available materials may have been subjected to an undisclosed or inadvertent isotopic fractionation. Substantial deviations from the given mass and composition can occur.
  • 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.

[edit] References


Isotopes of beryllium Isotopes of boron Isotopes of carbon
Index to isotope pages · Table of nuclides
Languages