Osmium-167
Properties and data of the isotope 167Os.
See also: list of Osmium isotopes.
General data
Name of the isotope:Osmium-167; Os-167Symbol:167Os or 16776OsMass number A:167 (= number of nucleons)Atomic number Z:76 (= number of protons)Neutrons N:91Isotopic mass:166.97155(8) u (atomic weight of Osmium-167)Nuclide mass:166.9298622 u (calculated nuclear mass without electrons)Mass excess:-26.501 MeVMass defect:1.411659788 u (per nucleus)Nuclear binding energy:1314.95262256 MeV (per nucleus)
7.8739678 MeV (average binding energy per nucleon)Separation energy:SN = 9.14(7) MeV (first neutron)
SP = 1.9(1) MeV (first proton)Half-life:0.81(6) sDecay constant λ:0.85573725995055 s-1Specific activity α:3.104439950914 × 10+21 Bq g-1
83903782457.157 Ci g-1Spin and parity:
(nuclear angular momentum)(7/2-)Year of discovery:1977
Radioactive Decay
Half-life T½ = 0.81(6) s respectively 8.1 × 10-1 seconds s.
Decay mode | Daughter | Probability | Decay energy | γ energy (intensity) |
---|
α | 163W | 57(8) % | 5.98(5) MeV | |
EE/β+ | 167Re | 43(8) % | 8.33(8) MeV | |
Parent Nuclides
Direct parent isotope is: 171Pt.
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 91) and isobaric (same nucleon number A = 167) with Osmium-167. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
OZ | Isotone N = 91 | Isobar A = 167 |
52 | 143Te | |
53 | 144I | |
54 | 145Xe | |
55 | 146Cs | |
56 | 147Ba | |
57 | 148La | |
58 | 149Ce | |
59 | 150Pr | |
60 | 151Nd | |
61 | 152Pm | |
62 | 153Sm | |
63 | 154Eu | 167Eu |
64 | 155Gd | 167Gd |
65 | 156Tb | 167Tb |
66 | 157Dy | 167Dy |
67 | 158Ho | 167Ho |
68 | 159Er | 167Er |
69 | 160Tm | 167Tm |
70 | 161Yb | 167Yb |
71 | 162Lu | 167Lu |
72 | 163Hf | 167Hf |
73 | 164Ta | 167Ta |
74 | 165W | 167W |
75 | 166Re | 167Re |
76 | 167Os | 167Os |
77 | 168Ir | 167Ir |
78 | 169Pt | 167Pt |
79 | 170Au | |
80 | 171Hg | |
External data and identifiers
Last update: 2020-10-21
Perma link: https://www.chemlin.org/isotope/osmium-167
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