Osmium-182
Properties and data of the isotope 182Os.
See also: list of Osmium isotopes.
General data
Name of the isotope:Osmium-182; Os-182Symbol:182Os or 18276OsMass number A:182 (= number of nucleons)Atomic number Z:76 (= number of protons)Neutrons N:106Isotopic mass:181.952110(23) u (atomic weight of Osmium-182)Nuclide mass:181.9104222 u (calculated nuclear mass without electrons)Mass excess:-44.60925 MeVMass defect:1.561073528 u (per nucleus)Nuclear binding energy:1454.13062489 MeV (per nucleus)
7.98972871 MeV (average binding energy per nucleon)Separation energy:SN = 9.13(3) MeV (first neutron)
SP = 5.381(25) MeV (first proton)Half-life:21.84(20) hDecay constant λ:8.815974518721 × 10-6 s-1Specific activity α:2.933206650240 × 10+16 Bq g-1
792758.55411905 Ci g-1Spin and parity:
(nuclear angular momentum)0+Year of discovery:1950
Radioactive Decay
Half-life T½ = 21.84(20) h (hours) respectively 7.8624 × 104 seconds s.
Decay mode | Daughter | Probability | Decay energy | γ energy (intensity) |
---|
EE | 182Re | 100 % | 0.84(10) MeV | |
Parent Nuclides
Direct parent isotopes are: 186Pt, 182Ir.
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 |
---|
182mOs | 1831.4(3) keV | 0.78(7) ms | (8)- |
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 106) and isobaric (same nucleon number A = 182) with Osmium-182. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
OZ | Isotone N = 106 | Isobar A = 182 |
64 | 170Gd | |
65 | 171Tb | |
66 | 172Dy | |
67 | 173Ho | |
68 | 174Er | |
69 | 175Tm | |
70 | 176Yb | 182Yb |
71 | 177Lu | 182Lu |
72 | 178Hf | 182Hf |
73 | 179Ta | 182Ta |
74 | 180W | 182W |
75 | 181Re | 182Re |
76 | 182Os | 182Os |
77 | 183Ir | 182Ir |
78 | 184Pt | 182Pt |
79 | 185Au | 182Au |
80 | 186Hg | 182Hg |
81 | 187Tl | 182Tl |
82 | 188Pb | 182Pb |
83 | 189Bi | |
84 | 190Po | |
85 | 191At | |
External data and identifiers
Last update: 2020-10-21
Perma link: https://www.chemlin.org/isotope/osmium-182
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