Ytterbium-166
Properties and data of the isotope 166Yb.
See also: list of Ytterbium isotopes.
General data
Name of the isotope:Ytterbium-166; Yb-166Symbol:166Yb or 16670YbMass number A:166 (= number of nucleons)Atomic number Z:70 (= number of protons)Neutrons N:96Isotopic mass:165.933874(8) u (atomic weight of Ytterbium-166)Nuclide mass:165.8954769 u (calculated nuclear mass without electrons)Mass excess:-61.59597 MeVMass defect:1.445710176 u (per nucleus)Nuclear binding energy:1346.67035468 MeV (per nucleus)
8.11247202 MeV (average binding energy per nucleon)Separation energy:SN = 9.372(27) MeV (first neutron)
SP = 5.955(7) MeV (first proton)Half-life:56.7(1) hDecay constant λ:3.395782777581 × 10-6 s-1Specific activity α:1.239386800990 × 10+16 Bq g-1
334969.40567311 Ci g-1Spin and parity:
(nuclear angular momentum)0+Charge radius:5.2525(57) femtometer fmYear of discovery:1954
Radioactive Decay
Half-life T½ = 56.7(1) h (hours) respectively 2.04120 × 105 seconds s.
Decay mode | Daughter | Probability | Decay energy | γ energy (intensity) |
---|
EC | 166Tm | 100 % | 0.293(14) MeV | |
Parent Nuclides
Direct parent isotope is: 166Lu.
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 96) and isobaric (same nucleon number A = 166) with Ytterbium-166. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
Z | Isotone N = 96 | Isobar A = 166 |
55 | 151Cs | |
56 | 152Ba | |
57 | 153La | |
58 | 154Ce | |
59 | 155Pr | |
60 | 156Nd | |
61 | 157Pm | |
62 | 158Sm | 166Sm |
63 | 159Eu | 166Eu |
64 | 160Gd | 166Gd |
65 | 161Tb | 166Tb |
66 | 162Dy | 166Dy |
67 | 163Ho | 166Ho |
68 | 164Er | 166Er |
69 | 165Tm | 166Tm |
70 | 166Yb | 166Yb |
71 | 167Lu | 166Lu |
72 | 168Hf | 166Hf |
73 | 169Ta | 166Ta |
74 | 170W | 166W |
75 | 171Re | 166Re |
76 | 172Os | 166Os |
77 | 173Ir | 166Ir |
78 | 174Pt | 166Pt |
79 | 175Au | |
80 | 176Hg | |
81 | 177Tl | |
82 | 178Pb | |
External data and identifiers
Last update: 2020-10-11
Perma link: https://www.chemlin.org/isotope/ytterbium-166
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