Ytterbium-165

Properties and data of the isotope ¹⁶⁵Yb.

Content

General data

Name of the isotope:Ytterbium-165; Yb-165Symbol:¹⁶⁵Yb or 16570YbMass number A:165 (= number of nucleons)Atomic number Z:70 (= number of protons)Neutrons N:95Isotopic mass:164.935270(28) u (atomic weight of Ytterbium-165)Nuclide mass:164.8968729 u (calculated nuclear mass without electrons)Mass excess:-60.29561 MeVMass defect:1.43564926 u (per nucleus)Nuclear binding energy:1337.29867179 MeV (per nucleus)
8.10484044 MeV (average binding energy per nucleon)Separation energy:S_N = 7.35(3) MeV (first neutron)
S_P = 5.68(4) MeV (first proton)Half-life:9.9(3) minDecay constant λ:0.0011669144453871 s^-1Specific activity α:4.284953147326 × 10⁺¹⁸ Bq g^-1
115809544.52235 Ci g^-1Spin and parity:
(nuclear angular momentum)5/2-Magnetic dipole moment:μ(μ_N) = + 0.478(8)Quadrupole moment Q:+ 2.48(4) barn (100 fm²)Nuclear g-factor:g_l = 0.1912Charge radius:5.2399(57) femtometer fmYear of discovery:1964

Radioactive Decay

Half-life T_½ = 9.9(3) min (minutes) respectively 5.94 × 10² seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
EE/β⁺	¹⁶⁵Tm	100 %	2.634(27) MeV

Parent Nuclides

Direct parent isotope is: ¹⁶⁵Lu.

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 95) and isobaric (same nucleon number A = 165) with Ytterbium-165. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 95	Isobar A = 165
55	¹⁵⁰Cs
56	¹⁵¹Ba
57	¹⁵²La
58	¹⁵³Ce
59	¹⁵⁴Pr
60	¹⁵⁵Nd
61	¹⁵⁶Pm
62	¹⁵⁷Sm	¹⁶⁵Sm
63	¹⁵⁸Eu	¹⁶⁵Eu
64	¹⁵⁹Gd	¹⁶⁵Gd
65	¹⁶⁰Tb	¹⁶⁵Tb
66	¹⁶¹Dy	¹⁶⁵Dy
67	¹⁶²Ho	¹⁶⁵Ho
68	¹⁶³Er	¹⁶⁵Er
69	¹⁶⁴Tm	¹⁶⁵Tm
70	¹⁶⁵Yb	¹⁶⁵Yb
71	¹⁶⁶Lu	¹⁶⁵Lu
72	¹⁶⁷Hf	¹⁶⁵Hf
73	¹⁶⁸Ta	¹⁶⁵Ta
74	¹⁶⁹W	¹⁶⁵W
75	¹⁷⁰Re	¹⁶⁵Re
76	¹⁷¹Os	¹⁶⁵Os
77	¹⁷²Ir	¹⁶⁵Ir
78	¹⁷³Pt
79	¹⁷⁴Au
80	¹⁷⁵Hg
81	¹⁷⁶Tl