Osmium-190m
Properties and data of the isotope 190mOs.
See also: list of Osmium isotopes.
General data
Name of the isotope:Osmium-190m; Os-190mSymbol:190mOs or 190m76OsMass number A:190 (= number of nucleons)Atomic number Z:76 (= number of protons)Neutrons N:114Isotopic mass:189.95844(2) u (atomic weight of Osmium-190m)
Excitation energy: 1705.4(2) keVNuclide mass:189.9167522 u (calculated nuclear mass without electrons)Mass excess:-38.71289 MeVMass defect:1.624062856 u (per nucleus)Nuclear binding energy:1512.80480599 MeV (per nucleus)
7.96213056 MeV (average binding energy per nucleon)Half-life:9.9(1) minDecay constant λ:0.0011669144453871 s-1Specific activity α:3.718160402971 × 10+18 Bq g-1
100490821.70193 Ci g-1Spin and parity:
(nuclear angular momentum)(10)-Magnetic dipole moment:μ(μN) = - 0.56Nuclear g-factor:gl = -0.056
Radioactive Decay
Half-life T½ = 9.9(1) min (minutes) respectively 5.94 × 102 seconds s.
Decay mode | Daughter | Probability | Decay energy | γ energy (intensity) |
---|
Iso | 190Os | 100 % | | |
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 |
---|
190Os | | stable | 0+ |
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 114) and isobaric (same nucleon number A = 190) with Osmium-190m. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
Z | Isotone N = 114 | Isobar A = 190 |
70 | 184Yb | |
71 | 185Lu | |
72 | 186Hf | 190Hf |
73 | 187Ta | 190Ta |
74 | 188W | 190W |
75 | 189Re | 190Re |
76 | 190Os | 190Os |
77 | 191Ir | 190Ir |
78 | 192Pt | 190Pt |
79 | 193Au | 190Au |
80 | 194Hg | 190Hg |
81 | 195Tl | 190Tl |
82 | 196Pb | 190Pb |
83 | 197Bi | 190Bi |
84 | 198Po | 190Po |
85 | 199At | 190At |
86 | 200Rn | |
87 | 201Fr | |
88 | 202Ra | |
89 | 203Ac | |
Last update: 2020-10-21
Perma link: https://www.chemlin.org/isotope/osmium-190m
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