Rhenium-196

Properties and data of the isotope ¹⁹⁶Re.

Content

General data

Name of the isotope:Rhenium-196; Re-196Symbol:¹⁹⁶Re or 19675ReMass number A:196 (= number of nucleons)Atomic number Z:75 (= number of protons)Neutrons N:121Isotopic mass:195.97580(32) u (atomic weight of Rhenium-196)Nuclide mass:195.9346607 u (calculated nuclear mass without electrons)Mass excess:-22.54215 MeVMass defect:1.659532236 u (per nucleus)Nuclear binding energy:1545.84432064 MeV (per nucleus)
7.88696082 MeV (average binding energy per nucleon)Separation energy:S_N = 5.03(42) MeV (first neutron)
S_P = 8.82(42) MeV (first proton)Half-life:3 sDecay constant λ:0.23104906018665 s^-1Specific activity α:7.13543582564 × 10⁺²⁰ Bq g^-1
19284961690.922 Ci g^-1Spin and parity:
(nuclear angular momentum)Year of discovery:2008

Radioactive Decay

Half-life T_½ = 3 s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	¹⁹⁶Os	100 %	5.73(30) MeV

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 121) and isobaric (same nucleon number A = 196) with Rhenium-196. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 121	Isobar A = 196
73	¹⁹⁴Ta
74	¹⁹⁵W	¹⁹⁶W
75	¹⁹⁶Re	¹⁹⁶Re
76	¹⁹⁷Os	¹⁹⁶Os
77	¹⁹⁸Ir	¹⁹⁶Ir
78	¹⁹⁹Pt	¹⁹⁶Pt
79	²⁰⁰Au	¹⁹⁶Au
80	²⁰¹Hg	¹⁹⁶Hg
81	²⁰²Tl	¹⁹⁶Tl
82	²⁰³Pb	¹⁹⁶Pb
83	²⁰⁴Bi	¹⁹⁶Bi
84	²⁰⁵Po	¹⁹⁶Po
85	²⁰⁶At	¹⁹⁶At
86	²⁰⁷Rn	¹⁹⁶Rn
87	²⁰⁸Fr
88	²⁰⁹Ra
89	²¹⁰Ac
90	²¹¹Th
91	²¹²Pa