Neodymium-135
Properties and data of the isotope 135Nd.
See also: List of individual Neodymium isotopes (and general data sources).
General data
Name of the isotope:Neodymium-135; Nd-135Symbol:135Nd or 13560NdMass number A:135 (= number of nucleons)Atomic number Z:60 (= number of protons)Neutrons N:75Nucleon pairing (Z - N):even - oddNuclear ratio (N/Z ratio):1.25 (= neutron-proton ratio)Neutron excess (N-Z):15Isotopic mass:134.918181(21) u (atomic weight of Neodymium-135)Nuclide mass:134.8852687 u (calculated nuclear mass without electrons)Mass excess:-76.21391 MeVMass defect:1.20118962 u (per nucleus)Nuclear binding energy:1118.90092389 MeV (per nucleus)
8.28815499 MeV (average binding energy per nucleon)Separation energy:SN = 8.638(22) MeV (first neutron)
SP = 4.975(28) MeV (first proton)Half-life:12.4(6) minDecay constant λ:0.00093164943623649 s-1Specific activity α:4.186958311266 × 10+18 Bq g-1
113161035.43963 Ci g-1Spin and parity:
(nuclear angular momentum)9/2(-)Magnetic dipole moment:μ(μN) = - 0.78(3)Quadrupole moment Q:+1.90(5) barn (100 fm2)Nuclear g-factor:gl = -0.17333333333333Charge radius:4.9086(26) femtometer fmYear of discovery:1970
Radioactive Decay
Half-life T½ = 12.4(6) min (minutes) respectively 7.44 × 102 seconds s.
Decay
mode | Daughter | Probability | Decay energy | γ energy
(intensity) |
|---|
| EC/β+ | 135Pr | 100 % | 4.722(22) MeV | |
Parent Nuclides
Direct parent isotope is: 135Pm.
Nuclear Isomers
Nuclear isomers or excited states with the activation energy in keV related to the ground state.
| Nuclear Isomer | Excitation Energy | Half-life | Spin |
|---|
| 135mNd | 64.95(24) keV | 5.5(5) min | (1/2+) |
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 75) and isobaric (same nucleon number A = 135) with Neodymium-135. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
| Z | Isotone N = 75 | Isobar A = 135 |
|---|
| 42 | 117Mo | |
| 43 | 118Tc | |
| 44 | 119Ru | |
| 45 | 120Rh | |
| 46 | 121Pd | |
| 47 | 122Ag | |
| 48 | 123Cd | |
| 49 | 124In | 135In |
| 50 | 125Sn | 135Sn |
| 51 | 126Sb | 135Sb |
| 52 | 127Te | 135Te |
| 53 | 128I | 135I |
| 54 | 129Xe | 135Xe |
| 55 | 130Cs | 135Cs |
| 56 | 131Ba | 135Ba |
| 57 | 132La | 135La |
| 58 | 133Ce | 135Ce |
| 59 | 134Pr | 135Pr |
| 60 | 135Nd | 135Nd |
| 61 | 136Pm | 135Pm |
| 62 | 137Sm | 135Sm |
| 63 | 138Eu | 135Eu |
| 64 | 139Gd | 135Gd |
| 65 | 140Tb | 135Tb |
| 66 | 141Dy | |
| 67 | 142Ho | |
| 68 | 143Er | |
| 69 | 144Tm | |
External data and identifiers
Last update: 2020-10-20
Perma link: https://www.chemlin.org/isotope/neodymium-135
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