Tin-117m
Properties and data of the isotope 117mSn.
See also: List of individual Tin isotopes (and general data sources).
General data
Name of the isotope:Tin-117m; Sn-117mSymbol:117mSn or 117m50SnMass number A:117 (= number of nucleons)Atomic number Z:50 (= number of protons)Neutrons N:67Nucleon pairing (Z - N):even - oddNuclear ratio (N/Z ratio):1.34 (= neutron-proton ratio)Neutron excess (N-Z):17Excitation energy:314.58(4) keVIsotopic mass:116.902954(3) u (atomic weight of Tin-117m)Nuclide mass:116.8755266 u (calculated nuclear mass without electrons)Mass excess:-90.39777 MeVMass defect:1.068846972 u (per nucleus)Nuclear binding energy:995.62454134 MeV (per nucleus)
8.50961146 MeV (average binding energy per nucleon)Half-life:14.00(5) dDecay constant λ:5.728489095536 × 10-7 s-1Specific activity α:2.97394553861 × 10+15 Bq g-1
80376.906449054 Ci g-1Spin and parity:
(nuclear angular momentum)11/2-Magnetic dipole moment:μ(μN) = -1.3937(12)Quadrupole moment Q:-0.42(5) barn (100 fm2)Nuclear g-factor:gl = -0.2534
Radioactive Decay
Half-life T½ = 14.00(5) d respectively 1.21 × 106 seconds s.
Decay
mode | Daughter | Probability | Decay energy | γ energy
(intensity) |
|---|
| Iso | 117Sn | 100 % | | |
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 |
|---|
| 117Sn | | stable | 1/2+ |
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 67) and isobaric (same nucleon number A = 117) with Tin-117m. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
| Z | Isotone N = 67 | Isobar A = 117 |
|---|
| 38 | 105Sr | |
| 39 | 106Y | |
| 40 | 107Zr | |
| 41 | 108Nb | |
| 42 | 109Mo | 117Mo |
| 43 | 110Tc | 117Tc |
| 44 | 111Ru | 117Ru |
| 45 | 112Rh | 117Rh |
| 46 | 113Pd | 117Pd |
| 47 | 114Ag | 117Ag |
| 48 | 115Cd | 117Cd |
| 49 | 116In | 117In |
| 50 | 117Sn | 117Sn |
| 51 | 118Sb | 117Sb |
| 52 | 119Te | 117Te |
| 53 | 120I | 117I |
| 54 | 121Xe | 117Xe |
| 55 | 122Cs | 117Cs |
| 56 | 123Ba | 117Ba |
| 57 | 124La | 117La |
| 58 | 125Ce | |
| 59 | 126Pr | |
| 60 | 127Nd | |
| 61 | 128Pm | |
| 62 | 129Sm | |
| 63 | 130Eu | |
Last update: 2020-10-17
Perma link: https://www.chemlin.org/isotope/tin-117m
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