Europium-150
Properties and data of the isotope 150Eu.
See also: List of individual Europium isotopes (and general data sources).
General data
Name of the isotope:Europium-150; Eu-150Symbol:150Eu or 15063EuMass number A:150 (= number of nucleons)Atomic number Z:63 (= number of protons)Neutrons N:87Nucleon pairing (Z - N):odd - oddNuclear ratio (N/Z ratio):1.3809523809524 (= neutron-proton ratio)Neutron excess (N-Z):24Isotopic mass:149.919707(7) u (atomic weight of Europium-150)Nuclide mass:149.8851492 u (calculated nuclear mass without electrons)Mass excess:-74.79245 MeVMass defect:1.327117708 u (per nucleus)Nuclear binding energy:1236.2021823 MeV (per nucleus)
8.24134788 MeV (average binding energy per nucleon)Separation energy:SN = 6.422(7) MeV (first neutron)
SP = 4.945(6) MeV (first proton)Half-life:36.9(9) aDecay constant λ:5.956407841883 × 10-10 s-1Specific activity α:2407404499533.7 Bq g-1
65.064986473884 Ci g-1Spin and parity:
(nuclear angular momentum)5-Magnetic dipole moment:μ(μN) = + 2.708(11)Quadrupole moment Q:1.13(5) barn (100 fm2)Nuclear g-factor:gl = 0.5416Charge radius:5.0296(108) femtometer fmYear of discovery:1950
Radioactive Decay
Half-life T½ = 36.9(9) a respectively 1.1637 × 109 seconds s.
Decay
mode | Daughter | Probability | Decay energy | γ energy
(intensity) |
|---|
| EC/β+ | 150Sm | 100 % | 2.259(6) MeV | |
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 |
|---|
| 150mEu | 41.7(10) keV | 12.8(1) h | 0- |
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 87) and isobaric (same nucleon number A = 150) with Europium-150. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
| Z | Isotone N = 87 | Isobar A = 150 |
|---|
| 49 | 136In | |
| 50 | 137Sn | |
| 51 | 138Sb | |
| 52 | 139Te | |
| 53 | 140I | |
| 54 | 141Xe | |
| 55 | 142Cs | 150Cs |
| 56 | 143Ba | 150Ba |
| 57 | 144La | 150La |
| 58 | 145Ce | 150Ce |
| 59 | 146Pr | 150Pr |
| 60 | 147Nd | 150Nd |
| 61 | 148Pm | 150Pm |
| 62 | 149Sm | 150Sm |
| 63 | 150Eu | 150Eu |
| 64 | 151Gd | 150Gd |
| 65 | 152Tb | 150Tb |
| 66 | 153Dy | 150Dy |
| 67 | 154Ho | 150Ho |
| 68 | 155Er | 150Er |
| 69 | 156Tm | 150Tm |
| 70 | 157Yb | 150Yb |
| 71 | 158Lu | 150Lu |
| 72 | 159Hf | |
| 73 | 160Ta | |
| 74 | 161W | |
| 75 | 162Re | |
| 76 | 163Os | |
| 77 | 164Ir | |
| 78 | 165Pt | |
External data and identifiers
Last update: 2020-10-20
Perma link: https://www.chemlin.org/isotope/europium-150
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