See also: List of individual Osmium isotopes (and general data sources).
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:106Nucleon pairing (Z - N):even - evenNuclear ratio (N/Z ratio):1.3947368421053 (= neutron-proton ratio)Neutron excess (N-Z):30Isotopic 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 = 9.130(333) 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:2.917857863165 × 10+16 Bq g-1 788610.23328808 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.
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.
