Tantalum-160m
Properties and data of the isotope 160mTa.
See also: List of individual Tantalum isotopes (and general data sources).
General data
Name of the isotope:Tantalum-160m; Ta-160mSymbol:160mTa or 160m73TaMass number A:160 (= number of nucleons)Atomic number Z:73 (= number of protons)Neutrons N:87Nucleon pairing (Z - N):odd - oddNuclear ratio (N/Z ratio):1.1917808219178 (= neutron-proton ratio)Neutron excess (N-Z):14Excitation energy:+x keVIsotopic mass:159.96154(6) u (atomic weight of Tantalum-160m)Nuclide mass:159.9214976 u (calculated nuclear mass without electrons)Mass excess:-35.82526 MeVMass defect:1.363535028 u (per nucleus)Nuclear binding energy:1270.12469737 MeV (per nucleus)
7.93827936 MeV (average binding energy per nucleon)Half-life:1.7(2) sDecay constant λ:0.4077336356235 s-1Specific activity α:1.544295211986 × 10+21 Bq g-1
41737708432.073 Ci g-1Spin and parity:
(nuclear angular momentum)
Radioactive Decay
Half-life T½ = 1.7(2) s.
Decay
mode | Daughter | Probability | Decay energy | γ energy
(intensity) |
|---|
| α | 156Lu | ? | | |
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 |
|---|
| 160Ta | | 1.55(4) s | |
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 87) and isobaric (same nucleon number A = 160) with Tantalum-160m. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
| Z | Isotone N = 87 | Isobar A = 160 |
|---|
| 49 | 136In | |
| 50 | 137Sn | |
| 51 | 138Sb | |
| 52 | 139Te | |
| 53 | 140I | |
| 54 | 141Xe | |
| 55 | 142Cs | |
| 56 | 143Ba | |
| 57 | 144La | |
| 58 | 145Ce | |
| 59 | 146Pr | 160Pr |
| 60 | 147Nd | 160Nd |
| 61 | 148Pm | 160Pm |
| 62 | 149Sm | 160Sm |
| 63 | 150Eu | 160Eu |
| 64 | 151Gd | 160Gd |
| 65 | 152Tb | 160Tb |
| 66 | 153Dy | 160Dy |
| 67 | 154Ho | 160Ho |
| 68 | 155Er | 160Er |
| 69 | 156Tm | 160Tm |
| 70 | 157Yb | 160Yb |
| 71 | 158Lu | 160Lu |
| 72 | 159Hf | 160Hf |
| 73 | 160Ta | 160Ta |
| 74 | 161W | 160W |
| 75 | 162Re | 160Re |
| 76 | 163Os | 160Os |
| 77 | 164Ir | |
| 78 | 165Pt | |
Last update: 2020-10-20
Perma link: https://www.chemlin.org/isotope/tantalum-160m
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