Boron-10

Properties and data of the isotope ¹⁰B.

Content

General data

Name of the isotope:Boron-10; B-10Symbol:¹⁰B or 105BMass number A:10 (= number of nucleons)Atomic number Z:5 (= number of protons)Neutrons N:5Isotopic mass:10.012937(3) u (atomic weight of Boron-10)Nuclide mass:10.0101941 u (calculated nuclear mass without electrons)Mass excess:12.05074 MeVMass defect:0.069512739999999 u (per nucleus)Nuclear binding energy:64.75070023 MeV (per nucleus)
6.47507002 MeV (average binding energy per nucleon)Separation energy:S_N = 8.4372(9) MeV (first neutron)
S_P = 6.58681(8) MeV (first proton)Half-life:stableSpin and parity:
(nuclear angular momentum)3+Isobaric spin: 0Magnetic dipole moment:μ(μ_N) = 1.8004636(8)Charge radius:2.4277(499) femtometer fmYear of discovery:1920

Parent Nuclides

Direct parent isotopes are: ¹⁰Be, ¹⁰C.

Occurrence

Comparison of the natural Boron isotopes including isotopic abundance (mole fraction of the isotope mixture in percent):

	Atomic Mass m_a	Quantity	Half-life	Spin
Boron Isotopic mixture	10.81 u	100 %
Isotope ¹⁰B	10.012937(3) u	19.65 % [18.9 - 20.4 %]	stable	3+
Isotope ¹¹B	11.009305(3) u	80.35 % [79.6 - 81.1 %]	stable	3/2-

NMR data

Nuclear magnetic properties of the NMR active Nuclide ¹⁰B

Isotope:¹⁰B-NMRQuantity:19.65 % [18.9 - 20.4 %]Spin:3+Nuclearmagnetic moment
μ/μ_N:1.8004636(8)Gyromagnetic ratio γ:2.875 · 10⁷ rad T^-1 s^-1Nuclear g-factor:g_l = 0.60015453333333Quadrupole moment Q:+0.0846(2) barn (100 fm²)Line width parameter (factor):l = 14.31 fm⁴Resonance frequency:v₀ = 4.5752 at 1 TRelative Sensitivity:0.01985 (H₀ = const.)
1.7193 (v₀ = const.)
[related to ¹H = 1.000]

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 5) and isobaric (same nucleon number A = 10) with Boron-10. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.