Ytterbium-174

Properties and data of the isotope ¹⁷⁴Yb.

Contents

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

General data

Name of the isotope:Ytterbium-174; Yb-174Symbol:¹⁷⁴Yb or 17470YbMass number A:174 (= number of nucleons)Atomic number Z:70 (= number of protons)Neutrons N:104Nucleon pairing (Z - N):even - evenNuclear ratio (N/Z ratio):1.4857142857143 (= neutron-proton ratio)Neutron excess (N-Z):34Isotopic mass:173.93887(2) u (atomic weight of Ytterbium-174)Nuclide mass:173.9004729 u (calculated nuclear mass without electrons)Mass excess:-56.94223 MeVMass defect:1.510033504 u (per nucleus)Nuclear binding energy:1406.58714877 MeV (per nucleus)
8.08383419 MeV (average binding energy per nucleon)Separation energy:S_N = 7.46460(1) MeV (first neutron)
S_P = 7.977(4) MeV (first proton)Half-life:stableSpin and parity:
(nuclear angular momentum)0+Charge radius:5.3108(60) femtometer fmYear of discovery:1934

Parent Nuclides

Direct parent isotopes are: ¹⁷⁴Lu, ¹⁷⁴Tm.

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+

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 104) and isobaric (same nucleon number A = 174) with Ytterbium-174. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 104	Isobar A = 174
62	¹⁶⁶Sm
63	¹⁶⁷Eu
64	¹⁶⁸Gd
65	¹⁶⁹Tb
66	¹⁷⁰Dy	¹⁷⁴Dy
67	¹⁷¹Ho	¹⁷⁴Ho
68	¹⁷²Er	¹⁷⁴Er
69	¹⁷³Tm	¹⁷⁴Tm
70	¹⁷⁴Yb	¹⁷⁴Yb
71	¹⁷⁵Lu	¹⁷⁴Lu
72	¹⁷⁶Hf	¹⁷⁴Hf
73	¹⁷⁷Ta	¹⁷⁴Ta
74	¹⁷⁸W	¹⁷⁴W
75	¹⁷⁹Re	¹⁷⁴Re
76	¹⁸⁰Os	¹⁷⁴Os
77	¹⁸¹Ir	¹⁷⁴Ir
78	¹⁸²Pt	¹⁷⁴Pt
79	¹⁸³Au	¹⁷⁴Au
80	¹⁸⁴Hg	¹⁷⁴Hg
81	¹⁸⁵Tl
82	¹⁸⁶Pb
83	¹⁸⁷Bi
84	¹⁸⁸Po
85	¹⁸⁹At