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Niobium-103

Properties and data of the isotope 103Nb.


Content

See also: list of Niobium isotopes.

 

General data

Name of the isotope:Niobium-103; Nb-103Symbol:103Nb or 10341NbMass number A:103 (= number of nucleons)Atomic number Z:41 (= number of protons)Neutrons N:62Isotopic mass:102.919453(4) u (atomic weight of Niobium-103)Nuclide mass:102.8969622 u (calculated nuclear mass without electrons)Mass excess:-75.02905 MeVMass defect:0.93859810399999 u (per nucleus)Nuclear binding energy:874.29850229 MeV (per nucleus)
8.48833497 MeV (average binding energy per nucleon)
Separation energy:SN = 6.795(5) MeV (first neutron)
SP = 10.73(1) MeV (first proton)
Half-life:1.5(2) sDecay constant λ:0.4620981203733 s-1Specific activity α:2.728254874509 × 10+21 Bq g-1
73736618229.995 Ci g-1
Spin and parity:
(nuclear angular momentum)
(5/2+)Magnetic dipole moment:μ(μN) = +3.133(4)Nuclear g-factor:gl = 1.2532Charge radius:4.5097(227) femtometer fmYear of discovery:1971

 

Radioactive Decay

Half-life T½ = 1.5(2) s.

Decay modeDaughterProbabilityDecay energyγ energy
(intensity)
β-103Mo100 %5.932(10) MeV

 

Parent Nuclides

Direct parent isotopes are: 103Zr, 248Cm, 252Cf.

 

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 62) and isobaric (same nucleon number A = 103) with Niobium-103. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

 

OZIsotone N = 62Isobar A = 103
3597Br
3698Kr
3799Rb103Rb
38100Sr103Sr
39101Y103Y
40102Zr103Zr
41103Nb103Nb
42104Mo103Mo
43105Tc103Tc
44106Ru103Ru
45107Rh103Rh
46108Pd103Pd
47109Ag103Ag
48110Cd103Cd
49111In103In
50112Sn103Sn
51113Sb103Sb
52114Te
53115I
54116Xe
55117Cs
56118Ba
57119La
58120Ce
59121Pr

 

External data and identifiers

Adopted Levels, Gammas:NuDat 103Nb

 


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Last update: 2020-10-15


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