Holmium-153
Properties and data of the isotope 153Ho.
See also: List of individual Holmium isotopes (and general data sources).
General data
Name of the isotope:Holmium-153; Ho-153Symbol:153Ho or 15367HoMass number A:153 (= number of nucleons)Atomic number Z:67 (= number of protons)Neutrons N:86Isotopic mass:152.930207(5) u (atomic weight of Holmium-153)Nuclide mass:152.8934553 u (calculated nuclear mass without electrons)Mass excess:-65.01176 MeVMass defect:1.33925292 u (per nucleus)Nuclear binding energy:1247.50605946 MeV (per nucleus)
8.15363438 MeV (average binding energy per nucleon)Separation energy:SN = 9.479(13) MeV (first neutron)
SP = 2.183(7) MeV (first proton)Half-life:2.01(3) minDecay constant λ:0.0057474890593694 s-1Specific activity α:2.277117678057 × 10+19 Bq g-1
615437210.2857 Ci g-1Spin and parity:
(nuclear angular momentum)11/2-Magnetic dipole moment:μ(μN) = - 6.81(5)Quadrupole moment Q:- 1.10(5) barn (100 fm2)Nuclear g-factor:gl = -1.2381818181818Charge radius:5.0760(339) femtometer fmYear of discovery:1963
Radioactive Decay
Half-life T½ = 2.01(3) min (minutes) respectively 1.206 × 102 seconds s.
Decay
mode | Daughter | Probability | Decay energy | γ energy
(intensity) |
|---|
| EC/β+ | 153Dy | 99.949(25) % | 4.131(6) MeV | |
| α | 149Tb | 0.051(25) % | 4.052(4) MeV | |
Parent Nuclides
Direct parent isotope is: 153Er.
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 |
|---|
| 153mHo | 68.7(3) keV | 9.3(5) min | 1/2+ |
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 86) and isobaric (same nucleon number A = 153) with Holmium-153. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
| Z | Isotone N = 86 | Isobar A = 153 |
|---|
| 48 | 134Cd | |
| 49 | 135In | |
| 50 | 136Sn | |
| 51 | 137Sb | |
| 52 | 138Te | |
| 53 | 139I | |
| 54 | 140Xe | |
| 55 | 141Cs | |
| 56 | 142Ba | 153Ba |
| 57 | 143La | 153La |
| 58 | 144Ce | 153Ce |
| 59 | 145Pr | 153Pr |
| 60 | 146Nd | 153Nd |
| 61 | 147Pm | 153Pm |
| 62 | 148Sm | 153Sm |
| 63 | 149Eu | 153Eu |
| 64 | 150Gd | 153Gd |
| 65 | 151Tb | 153Tb |
| 66 | 152Dy | 153Dy |
| 67 | 153Ho | 153Ho |
| 68 | 154Er | 153Er |
| 69 | 155Tm | 153Tm |
| 70 | 156Yb | 153Yb |
| 71 | 157Lu | 153Lu |
| 72 | 158Hf | 153Hf |
| 73 | 159Ta | |
| 74 | 160W | |
| 75 | 161Re | |
| 76 | 162Os | |
External data and identifiers
Last update: 2020-10-08
Perma link: https://www.chemlin.org/isotope/holmium-153
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