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Rhenium-198

Properties and data of the isotope 198Re.


Content

See also: list of Rhenium isotopes.

 

General data

Name of the isotope:Rhenium-198; Re-198Symbol:198Re or 19875ReMass number A:198 (= number of nucleons)Atomic number Z:75 (= number of protons)Neutrons N:123Isotopic mass:197.98160(43) u (atomic weight of Rhenium-198)Nuclide mass:197.9404607 u (calculated nuclear mass without electrons)Mass excess:-17.13949 MeVMass defect:1.671062068 u (per nucleus)Nuclear binding energy:1556.58428997 MeV (per nucleus)
7.86153682 MeV (average binding energy per nucleon)
Separation energy:SN = 4.71(50) MeV (first neutron)
SP = 9.29(57) MeV (first proton)
Half-life:160 nsDecay constant λ:4332169.8784997 s-1Specific activity α:1.324311534898 × 10+28 Bq g-1
3.579220364590 × 10+17 Ci g-1
Spin and parity:
(nuclear angular momentum)
Year of discovery:2009

 

Radioactive Decay

Half-life T½ = 160 ns respectively 1.6 × 10-7 seconds s.

Decay modeDaughterProbabilityDecay energyγ energy
(intensity)
β-198Os?6.70(45) MeV
β-, n197Os?0.10(45) MeV

 

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 123) and isobaric (same nucleon number A = 198) with Rhenium-198. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

 

OZIsotone N = 123Isobar A = 198
74197W
75198Re198Re
76199Os198Os
77200Ir198Ir
78201Pt198Pt
79202Au198Au
80203Hg198Hg
81204Tl198Tl
82205Pb198Pb
83206Bi198Bi
84207Po198Po
85208At198At
86209Rn198Rn
87210Fr
88211Ra
89212Ac
90213Th
91214Pa
92215U

 


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Last update: 2020-10-21


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