Rhenium-162

Properties and data of the isotope ¹⁶²Re.

Content

General data

Name of the isotope:Rhenium-162; Re-162Symbol:¹⁶²Re or 16275ReMass number A:162 (= number of nucleons)Atomic number Z:75 (= number of protons)Neutrons N:87Isotopic mass:161.97584(21) u (atomic weight of Rhenium-162)Nuclide mass:161.9347007 u (calculated nuclear mass without electrons)Mass excess:-22.5049 MeVMass defect:1.364885092 u (per nucleus)Nuclear binding energy:1271.38227389 MeV (per nucleus)
7.84803873 MeV (average binding energy per nucleon)Separation energy:S_N = 9.73(25) MeV (first neutron)Half-life:107(13) msDecay constant λ:6.4780110332705 s^-1Specific activity α:2.423074219539 × 10⁺²² Bq g^-1
654884924199.76 Ci g^-1Spin and parity:
(nuclear angular momentum)(2-)Year of discovery:1979

Radioactive Decay

Half-life T_½ = 107(13) ms respectively 1.07 × 10^-1 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
α	¹⁵⁸Ta	94(6) %	6.240(5) MeV
EE/β⁺	¹⁶²W	6(6) %	11.50(20) MeV

Parent Nuclides

Direct parent isotope is: ¹⁶⁶Ir.

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
^162mRe	173(13) keV	77(9) ms	(9+)

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 87) and isobaric (same nucleon number A = 162) with Rhenium-162. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 87	Isobar A = 162
49	¹³⁶In
50	¹³⁷Sn
51	¹³⁸Sb
52	¹³⁹Te
53	¹⁴⁰I
54	¹⁴¹Xe
55	¹⁴²Cs
56	¹⁴³Ba
57	¹⁴⁴La
58	¹⁴⁵Ce
59	¹⁴⁶Pr
60	¹⁴⁷Nd	¹⁶²Nd
61	¹⁴⁸Pm	¹⁶²Pm
62	¹⁴⁹Sm	¹⁶²Sm
63	¹⁵⁰Eu	¹⁶²Eu
64	¹⁵¹Gd	¹⁶²Gd
65	¹⁵²Tb	¹⁶²Tb
66	¹⁵³Dy	¹⁶²Dy
67	¹⁵⁴Ho	¹⁶²Ho
68	¹⁵⁵Er	¹⁶²Er
69	¹⁵⁶Tm	¹⁶²Tm
70	¹⁵⁷Yb	¹⁶²Yb
71	¹⁵⁸Lu	¹⁶²Lu
72	¹⁵⁹Hf	¹⁶²Hf
73	¹⁶⁰Ta	¹⁶²Ta
74	¹⁶¹W	¹⁶²W
75	¹⁶²Re	¹⁶²Re
76	¹⁶³Os	¹⁶²Os
77	¹⁶⁴Ir