Niobium-108
Properties and data of the isotope 108Nb.
See also: List of individual Niobium isotopes (and general data sources).
General data
Name of the isotope:Niobium-108; Nb-108Symbol:108Nb or 10841NbMass number A:108 (= number of nucleons)Atomic number Z:41 (= number of protons)Neutrons N:67Nucleon pairing (Z - N):odd - oddNuclear ratio (N/Z ratio):1.6341463414634 (= neutron-proton ratio)Neutron excess (N-Z):26Isotopic mass:107.936075(9) u (atomic weight of Niobium-108)Nuclide mass:107.9135842 u (calculated nuclear mass without electrons)Mass excess:-59.54575 MeVMass defect:0.96530068400001 u (per nucleus)Nuclear binding energy:899.17179534 MeV (per nucleus)
8.32566477 MeV (average binding energy per nucleon)Separation energy:SN = 3.893(11) MeV (first neutron)
SP = 12.46(112) MeV (first proton)Half-life:198(6) msDecay constant λ:3.5007433361613 s-1Specific activity α:1.970277521948 × 10+22 Bq g-1
532507438364.46 Ci g-1Spin and parity:
(nuclear angular momentum)(2+)Year of discovery:1994
Radioactive Decay
Half-life T½ = 198(6) ms respectively 1.98 × 10-1 seconds s.
Decay
mode | Daughter | Probability | Decay energy | γ energy
(intensity) |
|---|
| β- | 108Mo | 93.7(5) % | 11.21(12) MeV | |
| β-, n | 107Mo | 6.3(5) % | 4.934(12) MeV | |
| β-, 2n | 106Mo | ? | | |
Nuclear Isomers
Nuclear isomers or excited states with the activation energy in keV related to the ground state.
| Nuclear Isomer | Excitation Energy | Half-life | Spin |
|---|
| 108mNb | 166.6(5) keV | 0.109(2) μs | (4-,5) |
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 67) and isobaric (same nucleon number A = 108) with Niobium-108. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
| Z | Isotone N = 67 | Isobar A = 108 |
|---|
| 38 | 105Sr | |
| 39 | 106Y | 108Y |
| 40 | 107Zr | 108Zr |
| 41 | 108Nb | 108Nb |
| 42 | 109Mo | 108Mo |
| 43 | 110Tc | 108Tc |
| 44 | 111Ru | 108Ru |
| 45 | 112Rh | 108Rh |
| 46 | 113Pd | 108Pd |
| 47 | 114Ag | 108Ag |
| 48 | 115Cd | 108Cd |
| 49 | 116In | 108In |
| 50 | 117Sn | 108Sn |
| 51 | 118Sb | 108Sb |
| 52 | 119Te | 108Te |
| 53 | 120I | 108I |
| 54 | 121Xe | |
| 55 | 122Cs | |
| 56 | 123Ba | |
| 57 | 124La | |
| 58 | 125Ce | |
| 59 | 126Pr | |
| 60 | 127Nd | |
| 61 | 128Pm | |
| 62 | 129Sm | |
| 63 | 130Eu | |
External data and identifiers
Last update: 2020-10-15
Perma link: https://www.chemlin.org/isotope/niobium-108
© 1996 - 2026 ChemLin
