Rhenium-162m
Properties and data of the isotope 162mRe.
See also: list of Rhenium isotopes.
General data
Name of the isotope:Rhenium-162m; Re-162mSymbol:162mRe or 162m75ReMass number A:162 (= number of nucleons)Atomic number Z:75 (= number of protons)Neutrons N:87Isotopic mass:161.97584(21) u (atomic weight of Rhenium-162m)
Excitation energy: 173(13) keVNuclide mass:161.9347007 u (calculated nuclear mass without electrons)Mass excess:-22.5049 MeVMass defect:1.364885092 u (per nucleus)Nuclear binding energy:1271.38227389 MeV (per nucleus)
7.84803873 MeV (average binding energy per nucleon)Half-life:77(9) msDecay constant λ:9.0019114358434 s-1Specific activity α:3.367129110268 × 10+22 Bq g-1
910034894667.19 Ci g-1Spin and parity:
(nuclear angular momentum)(9+)
Radioactive Decay
Half-life T½ = 77(9) ms respectively 7.7 × 10-2 seconds s.
Decay mode | Daughter | Probability | Decay energy | γ energy (intensity) |
---|
α | 158Ta | 91(5) % | 6.240 MeV | |
EC/β+ | 162W | 9(5) % | 11.649 MeV | |
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 |
---|
162Re | | 107(13) ms | (2-) |
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 87) and isobaric (same nucleon number A = 162) with Rhenium-162m. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
Z | Isotone N = 87 | Isobar A = 162 |
49 | 136In | |
50 | 137Sn | |
51 | 138Sb | |
52 | 139Te | |
53 | 140I | |
54 | 141Xe | |
55 | 142Cs | |
56 | 143Ba | |
57 | 144La | |
58 | 145Ce | |
59 | 146Pr | |
60 | 147Nd | 162Nd |
61 | 148Pm | 162Pm |
62 | 149Sm | 162Sm |
63 | 150Eu | 162Eu |
64 | 151Gd | 162Gd |
65 | 152Tb | 162Tb |
66 | 153Dy | 162Dy |
67 | 154Ho | 162Ho |
68 | 155Er | 162Er |
69 | 156Tm | 162Tm |
70 | 157Yb | 162Yb |
71 | 158Lu | 162Lu |
72 | 159Hf | 162Hf |
73 | 160Ta | 162Ta |
74 | 161W | 162W |
75 | 162Re | 162Re |
76 | 163Os | 162Os |
77 | 164Ir | |
Last update: 2020-10-21
Perma link: https://www.chemlin.org/isotope/rhenium-162m
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