Neodymium-159
Properties and data of the isotope 159Nd.
See also: list of Neodymium isotopes.
General data
Name of the isotope:Neodymium-159; Nd-159Symbol:159Nd or 15960NdMass number A:159 (= number of nucleons)Atomic number Z:60 (= number of protons)Neutrons N:99Isotopic mass:158.94653(32) u (atomic weight of Neodymium-159)Nuclide mass:158.9136177 u (calculated nuclear mass without electrons)Mass excess:-49.80698 MeVMass defect:1.380798604 u (per nucleus)Nuclear binding energy:1286.20561483 MeV (per nucleus)
8.08934349 MeV (average binding energy per nucleon)Separation energy:SN = 3.82(36) MeV (first neutron)
SP = 12.77(42) MeV (first proton)Half-life:485 msDecay constant λ:1.4291694444535 s-1Specific activity α:5.447252979250 × 10+21 Bq g-1
147223053493.27 Ci g-1Spin and parity:
(nuclear angular momentum)(7/2+)Year of discovery:2012
Radioactive Decay
Half-life T½ = 485 ms respectively 4.85 × 10-1 seconds s.
Decay mode | Daughter | Probability | Decay energy | γ energy (intensity) |
---|
β- | 159Pm | 100 % | 6.75(30) MeV | |
β-, n | 158Pm | ? | 1.21(30) MeV | |
Parent Nuclides
Direct parent isotope is: 159Pr.
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 99) and isobaric (same nucleon number A = 159) with Neodymium-159. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
OZ | Isotone N = 99 | Isobar A = 159 |
57 | 156La | |
58 | 157Ce | |
59 | 158Pr | 159Pr |
60 | 159Nd | 159Nd |
61 | 160Pm | 159Pm |
62 | 161Sm | 159Sm |
63 | 162Eu | 159Eu |
64 | 163Gd | 159Gd |
65 | 164Tb | 159Tb |
66 | 165Dy | 159Dy |
67 | 166Ho | 159Ho |
68 | 167Er | 159Er |
69 | 168Tm | 159Tm |
70 | 169Yb | 159Yb |
71 | 170Lu | 159Lu |
72 | 171Hf | 159Hf |
73 | 172Ta | 159Ta |
74 | 173W | 159W |
75 | 174Re | 159Re |
76 | 175Os | |
77 | 176Ir | |
78 | 177Pt | |
79 | 178Au | |
80 | 179Hg | |
81 | 180Tl | |
82 | 181Pb | |
External data and identifiers
Last update: 2020-10-20
Perma link: https://www.chemlin.org/isotope/neodymium-159
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