Holmium-165
Properties and data of the isotope 165Ho.
See also: list of Holmium isotopes.
General data
Name of the isotope:Holmium-165; Ho-165Symbol:165Ho or 16567HoMass number A:165 (= number of nucleons)Atomic number Z:67 (= number of protons)Neutrons N:98Isotopic mass:164.93033(2) u (atomic weight of Holmium-165)Nuclide mass:164.8935783 u (calculated nuclear mass without electrons)Mass excess:-64.89719 MeVMass defect:1.443108912 u (per nucleus)Nuclear binding energy:1344.24729287 MeV (per nucleus)
8.14695329 MeV (average binding energy per nucleon)Separation energy:SN = 7.9888(11) MeV (first neutron)
SP = 6.2200(8) MeV (first proton)Half-life:stableSpin and parity:
(nuclear angular momentum)7/2-Magnetic dipole moment:μ(μN) = + 4.177(5)Charge radius:5.2022(312) femtometer fmYear of discovery:1934
Parent Nuclides
Direct parent isotopes are: 165Er, 165Dy.
Occurrence
Comparison of the natural Holmium isotopes including isotopic abundance (mole fraction of the isotope mixture in percent):
| | Atomic Mass ma | Quantity | Half-life | Spin |
|---|
Holmium
Isotopic mixture | 164.930328 u | 100 % | | |
| Isotope 165Ho | 164.93033(2) u | 100 % | stable | 7/2- |
NMR data
Nuclear magnetic properties of the NMR active Nuclide 165Ho
Isotope:165Ho-NMRQuantity:100 %Spin:7/2-Nuclearmagnetic moment
μ/μN:+ 4.177(5)Gyromagnetic ratio γ:5.710 · 107 rad T-1 s-1Nuclear g-factor:gl = 1.1934285714286Quadrupole moment Q:+ 3.58(2) barn (100 fm2)Resonance frequency:v0 = 9.0883 at 1 TRelative Sensitivity:0.20423 (H0 = const.)
4.4826 (v0 = const.)
[related to 1H = 1.000]
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 98) and isobaric (same nucleon number A = 165) with Holmium-165. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
| Z | Isotone N = 98 | Isobar A = 165 |
|---|
| 57 | 155La | |
| 58 | 156Ce | |
| 59 | 157Pr | |
| 60 | 158Nd | |
| 61 | 159Pm | |
| 62 | 160Sm | 165Sm |
| 63 | 161Eu | 165Eu |
| 64 | 162Gd | 165Gd |
| 65 | 163Tb | 165Tb |
| 66 | 164Dy | 165Dy |
| 67 | 165Ho | 165Ho |
| 68 | 166Er | 165Er |
| 69 | 167Tm | 165Tm |
| 70 | 168Yb | 165Yb |
| 71 | 169Lu | 165Lu |
| 72 | 170Hf | 165Hf |
| 73 | 171Ta | 165Ta |
| 74 | 172W | 165W |
| 75 | 173Re | 165Re |
| 76 | 174Os | 165Os |
| 77 | 175Ir | 165Ir |
| 78 | 176Pt | |
| 79 | 177Au | |
| 80 | 178Hg | |
| 81 | 179Tl | |
| 82 | 180Pb | |
External data and identifiers
Last update: 2020-10-09
Perma link: https://www.chemlin.org/isotope/holmium-165
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