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Rhenium-190m

Properties and data of the isotope 190Re.


Content

See also: list of Rhenium isotopes.

 

General data

Name of the isotope:Rhenium-190m; Re-190mSymbol:190Re or 19075ReMass 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) keV
Nuclide 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-1
Spin and parity:
(nuclear angular momentum)
(6-)

 

Radioactive Decay

Half-life T½ = 3.2(2) h (hours) respectively 1.1520 × 104 seconds s.

Decay modeDaughterProbabilityDecay energyγ energy
(intensity)
β-190Os54.4(20) %
Iso190Re45.6(20) %

 

Nuclear Isomers

Nuclear isomers or excited states with the activation energy in keV related to the ground state.

Nuclear IsomerExcitation EnergyHalf-lifeSpin
190Re3.1(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.

 

OZIsotone N = 115Isobar A = 190
70185Yb
71186Lu
72187Hf190Hf
73188Ta190Ta
74189W190W
75190Re190Re
76191Os190Os
77192Ir190Ir
78193Pt190Pt
79194Au190Au
80195Hg190Hg
81196Tl190Tl
82197Pb190Pb
83198Bi190Bi
84199Po190Po
85200At190At
86201Rn
87202Fr
88203Ra
89204Ac

 


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Last update: 2020-10-21


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