Ytterbium-173

Properties and data of the isotope ¹⁷³Yb.

Contents

General Data

Parent Nuclides

NMR Data

Isotones und Isobares

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

General data

Name of the isotope:Ytterbium-173; Yb-173Symbol:¹⁷³Yb or 17370YbMass number A:173 (= number of nucleons)Atomic number Z:70 (= number of protons)Neutrons N:103Nucleon pairing (Z - N):even - oddNuclear ratio (N/Z ratio):1.4714285714286 (= neutron-proton ratio)Neutron excess (N-Z):33Isotopic mass:172.93822(2) u (atomic weight of Ytterbium-173)Nuclide mass:172.8998229 u (calculated nuclear mass without electrons)Mass excess:-57.5477 MeVMass defect:1.502018588 u (per nucleus)Nuclear binding energy:1399.12130261 MeV (per nucleus)
8.08740637 MeV (average binding energy per nucleon)Separation energy:S_N = 6.36710(2) MeV (first neutron)
S_P = 7.466(5) MeV (first proton)Half-life:stableSpin and parity:
(nuclear angular momentum)5/2-Magnetic dipole moment:μ(μ_N) = - 0.67989(3)Charge radius:5.3046(59) femtometer fmYear of discovery:1934

Parent Nuclides

Direct parent isotopes are: ¹⁷³Lu, ¹⁷³Tm.

Occurrence

Comparison of the natural Ytterbium isotopes including isotopic abundance (mole fraction of the isotope mixture in percent):

	Atomic Mass m_a	Quantity	Half-life	Spin
Ytterbium Isotopic mixture	173.045 u	100 %
Isotope ¹⁶⁸Yb	167.93389(2) u	0.126(1) %	stable	0+
Isotope ¹⁷⁰Yb	169.93477(2) u	3.023(2) %	stable	0+
Isotope ¹⁷¹Yb	170.93633(2) u	14.216(7) %	stable	1/2-
Isotope ¹⁷²Yb	171.93639(2) u	21.754(10) %	stable	0+
Isotope ¹⁷³Yb	172.93822(2) u	16.098(9) %	stable	5/2-
Isotope ¹⁷⁴Yb	173.93887(2) u	31.896(26) %	stable	0+
Isotope ¹⁷⁶Yb	175.94258(2) u	12.887(30) %	stable	0+

NMR data

Nuclear magnetic properties and parameters of the NMR active Nuclide ¹⁷³Yb

Isotope:¹⁷³Yb-NMRQuantity:16.098(9) %Spin:5/2-Nuclearmagnetic moment
μ/μ_N:- 0.67989(3)Gyromagnetic ratio γ:0 · 10⁷ rad T^-1 s^-1
0.00000 MHz T^-1Nuclear g-factor:g_l = -0.271956Quadrupole moment Q:+ 2.80(4) barn (100 fm²)

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 103) and isobaric (same nucleon number A = 173) with Ytterbium-173. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 103	Isobar A = 173
60	¹⁶³Nd
62	¹⁶⁵Sm
63	¹⁶⁶Eu
64	¹⁶⁷Gd
65	¹⁶⁸Tb
66	¹⁶⁹Dy	¹⁷³Dy
67	¹⁷⁰Ho	¹⁷³Ho
68	¹⁷¹Er	¹⁷³Er
69	¹⁷²Tm	¹⁷³Tm
70	¹⁷³Yb	¹⁷³Yb
71	¹⁷⁴Lu	¹⁷³Lu
72	¹⁷⁵Hf	¹⁷³Hf
73	¹⁷⁶Ta	¹⁷³Ta
74	¹⁷⁷W	¹⁷³W
75	¹⁷⁸Re	¹⁷³Re
76	¹⁷⁹Os	¹⁷³Os
77	¹⁸⁰Ir	¹⁷³Ir
78	¹⁸¹Pt	¹⁷³Pt
79	¹⁸²Au	¹⁷³Au
80	¹⁸³Hg	¹⁷³Hg
81	¹⁸⁴Tl
82	¹⁸⁵Pb
83	¹⁸⁶Bi
84	¹⁸⁷Po
85	¹⁸⁸At