Rhenium-190m
Properties and data of the isotope 190mRe.
See also: list of Rhenium isotopes.
General data
Name of the isotope:Rhenium-190m; Re-190mSymbol:190mRe or 190m75ReMass number A:190 (= number of nucleons)Atomic number Z:75 (= number of protons)Neutrons N:115Isotopic mass:189.96174(8) u (atomic weight of Rhenium-190m)
Excitation energy: 210(50) keVNuclide mass:189.9206007 u (calculated nuclear mass without electrons)Mass excess:-35.63896 MeVMass defect:1.62160274 u (per nucleus)Nuclear binding energy:1510.51322269 MeV (per nucleus)
7.95006959 MeV (average binding energy per nucleon)Half-life:3.2(2) hDecay constant λ:6.016902609027 × 10-5 s-1Specific activity α:1.917176457782 × 10+17 Bq g-1
5181557.9940059 Ci g-1Spin and parity:
(nuclear angular momentum)(6-)
Radioactive Decay
Half-life T½ = 3.2(2) h (hours) respectively 1.1520 × 104 seconds s.
Decay mode | Daughter | Probability | Decay energy | γ energy (intensity) |
---|
β- | 190Os | 54.4(20) % | | |
Iso | 190Re | 45.6(20) % | | |
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 |
---|
190Re | | 3.1(3) min | (2)- |
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 115) and isobaric (same nucleon number A = 190) with Rhenium-190m. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
Z | Isotone N = 115 | Isobar A = 190 |
70 | 185Yb | |
71 | 186Lu | |
72 | 187Hf | 190Hf |
73 | 188Ta | 190Ta |
74 | 189W | 190W |
75 | 190Re | 190Re |
76 | 191Os | 190Os |
77 | 192Ir | 190Ir |
78 | 193Pt | 190Pt |
79 | 194Au | 190Au |
80 | 195Hg | 190Hg |
81 | 196Tl | 190Tl |
82 | 197Pb | 190Pb |
83 | 198Bi | 190Bi |
84 | 199Po | 190Po |
85 | 200At | 190At |
86 | 201Rn | |
87 | 202Fr | |
88 | 203Ra | |
89 | 204Ac | |
Last update: 2020-10-21
Perma link: https://www.chemlin.org/isotope/rhenium-190m
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