Lutetium-176m
Properties and data of the isotope 176mLu.
See also: list of Lutetium isotopes.
General data
Name of the isotope:Lutetium-176m; Lu-176mSymbol:176mLu or 176m71LuMass number A:176 (= number of nucleons)Atomic number Z:71 (= number of protons)Neutrons N:105Isotopic mass:175.94269(2) u (atomic weight of Lutetium-176m)
Excitation energy: 122.845(4) keVNuclide mass:175.9037445 u (calculated nuclear mass without electrons)Mass excess:-53.38392 MeVMass defect:1.522703452 u (per nucleus)Nuclear binding energy:1418.38912932 MeV (per nucleus)
8.05902914 MeV (average binding energy per nucleon)Half-life:3.664(19) hDecay constant λ:5.254936776443 × 10-5 s-1Specific activity α:1.808341113017 × 10+17 Bq g-1
4887408.4135603 Ci g-1Spin and parity:
(nuclear angular momentum)1-Magnetic dipole moment:μ(μN) = + 0.318(3)Quadrupole moment Q:- 1.47(1) barn (100 fm2)Nuclear g-factor:gl = 0.318
Radioactive Decay
Half-life T½ = 3.664(19) h (hours) respectively 1.31904 × 104 seconds s.
Decay
mode | Daughter | Probability | Decay energy | γ energy
(intensity) |
|---|
| β- | 176Hf | 99.905(16) % | | |
| EE | 176Yb | 0.095(16) % | | |
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 |
|---|
| 176Lu | | 3.76(7) × 1010 a | 7- |
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 105) and isobaric (same nucleon number A = 176) with Lutetium-176m. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
| Z | Isotone N = 105 | Isobar A = 176 |
|---|
| 63 | 168Eu | |
| 64 | 169Gd | |
| 65 | 170Tb | |
| 66 | 171Dy | |
| 67 | 172Ho | |
| 68 | 173Er | 176Er |
| 69 | 174Tm | 176Tm |
| 70 | 175Yb | 176Yb |
| 71 | 176Lu | 176Lu |
| 72 | 177Hf | 176Hf |
| 73 | 178Ta | 176Ta |
| 74 | 179W | 176W |
| 75 | 180Re | 176Re |
| 76 | 181Os | 176Os |
| 77 | 182Ir | 176Ir |
| 78 | 183Pt | 176Pt |
| 79 | 184Au | 176Au |
| 80 | 185Hg | 176Hg |
| 81 | 186Tl | 176Tl |
| 82 | 187Pb | |
| 83 | 188Bi | |
| 84 | 189Po | |
| 85 | 190At | |
Last update: 2020-10-11
Perma link: https://www.chemlin.org/isotope/lutetium-176m
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