Ytterbium-167

Properties and data of the isotope ¹⁶⁷Yb.

Contents

General data

Name of the isotope:Ytterbium-167; Yb-167Symbol:¹⁶⁷Yb or 16770YbMass number A:167 (= number of nucleons)Atomic number Z:70 (= number of protons)Neutrons N:97Isotopic mass:166.934953(4) u (atomic weight of Ytterbium-167)Nuclide mass:166.8965559 u (calculated nuclear mass without electrons)Mass excess:-60.59089 MeVMass defect:1.453296092 u (per nucleus)Nuclear binding energy:1353.73658992 MeV (per nucleus)
8.10620713 MeV (average binding energy per nucleon)Separation energy:S_N = 7.066(8) MeV (first neutron)
S_P = 5.991(12) MeV (first proton)Half-life:17.5(2) minDecay constant λ:0.00066014017196185 s^-1Specific activity α:2.3948536764 × 10⁺¹⁸ Bq g^-1
64725775.038378 Ci g^-1Spin and parity:
(nuclear angular momentum)5/2-Magnetic dipole moment:μ(μ_N) = + 0.623(8)Quadrupole moment Q:+ 2.70(4) barn (100 fm²)Nuclear g-factor:g_l = 0.2492Charge radius:5.2621(56) femtometer fmYear of discovery:1954

Radioactive Decay

Half-life T_½ = 17.5(2) min (minutes) respectively 1.050 × 10³ seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
EC/β⁺	¹⁶⁷Tm	100 %	1.953(4) MeV

Parent Nuclides

Direct parent isotope is: ¹⁶⁷Lu.

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 97) and isobaric (same nucleon number A = 167) with Ytterbium-167. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 97	Isobar A = 167
56	¹⁵³Ba
57	¹⁵⁴La
58	¹⁵⁵Ce
59	¹⁵⁶Pr
60	¹⁵⁷Nd
61	¹⁵⁸Pm
62	¹⁵⁹Sm
63	¹⁶⁰Eu	¹⁶⁷Eu
64	¹⁶¹Gd	¹⁶⁷Gd
65	¹⁶²Tb	¹⁶⁷Tb
66	¹⁶³Dy	¹⁶⁷Dy
67	¹⁶⁴Ho	¹⁶⁷Ho
68	¹⁶⁵Er	¹⁶⁷Er
69	¹⁶⁶Tm	¹⁶⁷Tm
70	¹⁶⁷Yb	¹⁶⁷Yb
71	¹⁶⁸Lu	¹⁶⁷Lu
72	¹⁶⁹Hf	¹⁶⁷Hf
73	¹⁷⁰Ta	¹⁶⁷Ta
74	¹⁷¹W	¹⁶⁷W
75	¹⁷²Re	¹⁶⁷Re
76	¹⁷³Os	¹⁶⁷Os
77	¹⁷⁴Ir	¹⁶⁷Ir
78	¹⁷⁵Pt	¹⁶⁷Pt
79	¹⁷⁶Au
80	¹⁷⁷Hg
81	¹⁷⁸Tl
82	¹⁷⁹Pb