Rhenium-167

Properties and data of the isotope ¹⁶⁷Re.

Contents

General Data

Radioactive Decay

Parent Nuclides

Isotones und Isobares

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

General data

Name of the isotope:Rhenium-167; Re-167Symbol:¹⁶⁷Re or 16775ReMass number A:167 (= number of nucleons)Atomic number Z:75 (= number of protons)Neutrons N:92Isotopic mass:166.96261(4) u (atomic weight of Rhenium-167)Nuclide mass:166.9214707 u (calculated nuclear mass without electrons)Mass excess:-34.82856 MeVMass defect:1.421439672 u (per nucleus)Nuclear binding energy:1324.06252583 MeV (per nucleus)
7.92851812 MeV (average binding energy per nucleon)Separation energy:S_N = 11.01(8) MeV (first neutron)
S_P = 0.23(4) MeV (first proton)Half-life:5.9(3) sDecay constant λ:0.11748257297626 s^-1Specific activity α:4.26202772922 × 10⁺²⁰ Bq g^-1
11518993862.762 Ci g^-1Spin and parity:
(nuclear angular momentum)(9/2-)Year of discovery:1992

Radioactive Decay

Half-life T_½ = 5.9(3) s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
α	¹⁶³Ta	ca. 1 %	5.279(14) MeV
EC/β⁺	¹⁶⁷W	ca. 99 %	7.27(4) MeV

Parent Nuclides

Direct parent isotopes are: ¹⁷¹Ir, ¹⁶⁷Os.

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
^167mRe	+x keV	3.4(4) s

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 92) and isobaric (same nucleon number A = 167) with Rhenium-167. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 92	Isobar A = 167
53	¹⁴⁵I
54	¹⁴⁶Xe
55	¹⁴⁷Cs
56	¹⁴⁸Ba
57	¹⁴⁹La
58	¹⁵⁰Ce
59	¹⁵¹Pr
60	¹⁵²Nd
61	¹⁵³Pm
62	¹⁵⁴Sm
63	¹⁵⁵Eu	¹⁶⁷Eu
64	¹⁵⁶Gd	¹⁶⁷Gd
65	¹⁵⁷Tb	¹⁶⁷Tb
66	¹⁵⁸Dy	¹⁶⁷Dy
67	¹⁵⁹Ho	¹⁶⁷Ho
68	¹⁶⁰Er	¹⁶⁷Er
69	¹⁶¹Tm	¹⁶⁷Tm
70	¹⁶²Yb	¹⁶⁷Yb
71	¹⁶³Lu	¹⁶⁷Lu
72	¹⁶⁴Hf	¹⁶⁷Hf
73	¹⁶⁵Ta	¹⁶⁷Ta
74	¹⁶⁶W	¹⁶⁷W
75	¹⁶⁷Re	¹⁶⁷Re
76	¹⁶⁸Os	¹⁶⁷Os
77	¹⁶⁹Ir	¹⁶⁷Ir
78	¹⁷⁰Pt	¹⁶⁷Pt
79	¹⁷¹Au
80	¹⁷²Hg