Lutetium-163

Properties and data of the isotope ¹⁶³Lu.

Content

General data

Name of the isotope:Lutetium-163; Lu-163Symbol:¹⁶³Lu or 16371LuMass number A:163 (= number of nucleons)Atomic number Z:71 (= number of protons)Neutrons N:92Isotopic mass:162.94118(3) u (atomic weight of Lutetium-163)Nuclide mass:162.9022345 u (calculated nuclear mass without electrons)Mass excess:-54.79048 MeVMass defect:1.411569544 u (per nucleus)Nuclear binding energy:1314.86856082 MeV (per nucleus)
8.06667829 MeV (average binding energy per nucleon)Separation energy:S_N = 10.03(8) MeV (first neutron)
S_P = 2.25(3) MeV (first proton)Half-life:3.97(13) minDecay constant λ:0.0029099377857261 s^-1Specific activity α:1.081731804894 × 10⁺¹⁹ Bq g^-1
292359947.26884 Ci g^-1Spin and parity:
(nuclear angular momentum)1/2(+)Magnetic dipole moment:μ(μ_N) = + 0.0769(10)Nuclear g-factor:g_l = 0.1538Charge radius:5.2567(312) femtometer fmYear of discovery:1979

Radioactive Decay

Half-life T_½ = 3.97(13) min (minutes) respectively 2.382 × 10² seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
EE/β⁺	¹⁶³Yb	100 %	4.51(3) MeV

Parent Nuclides

Direct parent isotope is: ¹⁶³Hf.

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 92) and isobaric (same nucleon number A = 163) with Lutetium-163. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

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