Osmium-196

Properties and data of the isotope ¹⁹⁶Os.

Content

General data

Name of the isotope:Osmium-196; Os-196Symbol:¹⁹⁶Os or 19676OsMass number A:196 (= number of nucleons)Atomic number Z:76 (= number of protons)Neutrons N:120Isotopic mass:195.96964(4) u (atomic weight of Osmium-196)Nuclide mass:195.9279522 u (calculated nuclear mass without electrons)Mass excess:-28.28016 MeVMass defect:1.664852352 u (per nucleus)Nuclear binding energy:1550.79997677 MeV (per nucleus)
7.91224478 MeV (average binding energy per nucleon)Separation energy:S_N = 6.84(7) MeV (first neutron)
S_P = 9.99(3) MeV (first proton)Half-life:34.9(2) minDecay constant λ:0.00033101584553961 s^-1Specific activity α:1.022268742928 × 10⁺¹⁸ Bq g^-1
27628884.944014 Ci g^-1Spin and parity:
(nuclear angular momentum)0+Year of discovery:1977

Radioactive Decay

Half-life T_½ = 34.9(2) min (minutes) respectively 2.094 × 10³ seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	¹⁹⁶Ir	100 %	1.16(6) MeV

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 120) and isobaric (same nucleon number A = 196) with Osmium-196. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 120	Isobar A = 196
73	¹⁹³Ta
74	¹⁹⁴W	¹⁹⁶W
75	¹⁹⁵Re	¹⁹⁶Re
76	¹⁹⁶Os	¹⁹⁶Os
77	¹⁹⁷Ir	¹⁹⁶Ir
78	¹⁹⁸Pt	¹⁹⁶Pt
79	¹⁹⁹Au	¹⁹⁶Au
80	²⁰⁰Hg	¹⁹⁶Hg
81	²⁰¹Tl	¹⁹⁶Tl
82	²⁰²Pb	¹⁹⁶Pb
83	²⁰³Bi	¹⁹⁶Bi
84	²⁰⁴Po	¹⁹⁶Po
85	²⁰⁵At	¹⁹⁶At
86	²⁰⁶Rn	¹⁹⁶Rn
87	²⁰⁷Fr
88	²⁰⁸Ra
89	²⁰⁹Ac
90	²¹⁰Th