Rhenium-192

Properties and data of the isotope ¹⁹²Re.

Contents

See also: List of individual Rhenium isotopes (and general data sources).

General data

Name of the isotope:Rhenium-192; Re-192Symbol:¹⁹²Re or 19275ReMass number A:192 (= number of nucleons)Atomic number Z:75 (= number of protons)Neutrons N:117Isotopic mass:191.96609(8) u (atomic weight of Rhenium-192)Nuclide mass:191.9249507 u (calculated nuclear mass without electrons)Mass excess:-31.58696 MeVMass defect:1.634582572 u (per nucleus)Nuclear binding energy:1522.60385832 MeV (per nucleus)
7.93022843 MeV (average binding energy per nucleon)Separation energy:S_N = 5.31(7) MeV (first neutron)
S_P = 7.70(8) MeV (first proton)Half-life:16(1) sDecay constant λ:0.043321698784997 s^-1Specific activity α:1.365912944371 × 10⁺²⁰ Bq g^-1
3691656606.41 Ci g^-1Spin and parity:
(nuclear angular momentum)Year of discovery:1965

Radioactive Decay

Half-life T_½ = 16(1) s respectively 1.6 × 10¹ seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	¹⁹²Os	100 %	4.29(7) MeV

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
^192m1Re	160.1+x keV	85(10) μs
^192m2Re	267(10) keV	61 s

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 117) and isobaric (same nucleon number A = 192) with Rhenium-192. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 117	Isobar A = 192
71	¹⁸⁸Lu
72	¹⁸⁹Hf
73	¹⁹⁰Ta	¹⁹²Ta
74	¹⁹¹W	¹⁹²W
75	¹⁹²Re	¹⁹²Re
76	¹⁹³Os	¹⁹²Os
77	¹⁹⁴Ir	¹⁹²Ir
78	¹⁹⁵Pt	¹⁹²Pt
79	¹⁹⁶Au	¹⁹²Au
80	¹⁹⁷Hg	¹⁹²Hg
81	¹⁹⁸Tl	¹⁹²Tl
82	¹⁹⁹Pb	¹⁹²Pb
83	²⁰⁰Bi	¹⁹²Bi
84	²⁰¹Po	¹⁹²Po
85	²⁰²At	¹⁹²At
86	²⁰³Rn
87	²⁰⁴Fr
88	²⁰⁵Ra
89	²⁰⁶Ac
90	²⁰⁷Th