Neodymium-141m
Properties and data of the isotope 141Nd.
See also: list of Neodymium isotopes.
General data
Name of the isotope:Neodymium-141m; Nd-141mSymbol:141Nd or 14160NdMass number A:141 (= number of nucleons)Atomic number Z:60 (= number of protons)Neutrons N:81Isotopic mass:140.909615(4) u (atomic weight of Neodymium-141m)
Excitation energy: 756.51(5) keVNuclide mass:140.8767027 u (calculated nuclear mass without electrons)Mass excess:-84.19309 MeVMass defect:1.261745116 u (per nucleus)Nuclear binding energy:1175.30800508 MeV (per nucleus)
8.33551777 MeV (average binding energy per nucleon)Half-life:62.0(8) sDecay constant λ:0.011179793234838 s-1Specific activity α:4.809020688940 × 10+19 Bq g-1
1299735321.3352 Ci g-1Spin and parity:
(nuclear angular momentum)11/2-
Radioactive Decay
Half-life T½ = 62.0(8) s respectively 6.20 × 101 seconds s.
Decay mode | Daughter | Probability | Decay energy | γ energy (intensity) |
---|
β+ | 141Pr | < 0.05 % | | |
Iso | 141Nd | 99.95 % | | |
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 |
---|
141Nd | | 2.49(3) h | 3/2+ |
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 81) and isobaric (same nucleon number A = 141) with Neodymium-141m. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
OZ | Isotone N = 81 | Isobar A = 141 |
45 | 126Rh | |
46 | 127Pd | |
47 | 128Ag | |
48 | 129Cd | |
49 | 130In | |
50 | 131Sn | |
51 | 132Sb | 141Sb |
52 | 133Te | 141Te |
53 | 134I | 141I |
54 | 135Xe | 141Xe |
55 | 136Cs | 141Cs |
56 | 137Ba | 141Ba |
57 | 138La | 141La |
58 | 139Ce | 141Ce |
59 | 140Pr | 141Pr |
60 | 141Nd | 141Nd |
61 | 142Pm | 141Pm |
62 | 143Sm | 141Sm |
63 | 144Eu | 141Eu |
64 | 145Gd | 141Gd |
65 | 146Tb | 141Tb |
66 | 147Dy | 141Dy |
67 | 148Ho | 141Ho |
68 | 149Er | |
69 | 150Tm | |
70 | 151Yb | |
71 | 152Lu | |
72 | 153Hf | |
External data and identifiers
Last update: 2020-10-20
Perma link: https://www.chemlin.org/isotope/neodymium-141m
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