Indium-119m
Properties and data of the isotope 119In.
See also: list of Indium isotopes.
General data
Name of the isotope:Indium-119m; In-119mSymbol:119In or 11949InMass number A:119 (= number of nucleons)Atomic number Z:49 (= number of protons)Neutrons N:70Isotopic mass:118.905851(8) u (atomic weight of Indium-119m)
Excitation energy: 311.37(3)Nuclide mass:118.8789721 u (calculated nuclear mass without electrons)Mass excess:-87.69923 MeVMass defect:1.084119688 u (per nucleus)Nuclear binding energy:1009.85098465 MeV (per nucleus)
8.48614273 MeV (average binding energy per nucleon)Half-life:18.0(3) minDecay constant λ:0.00064180294496291 s-1Specific activity α:3.275447236346 × 10+18 Bq g-1
88525600.982338 Ci g-1Spin and parity:
(nuclear angular momentum)1/2-Magnetic dipole moment:μ(μN) = - 0.319(5)Nuclear g-factor:gl = -0.638
Radioactive Decay
Half-life T½ = 18.0(3) min (minutes) respectively 1.080 × 103 seconds s.
| Decay mode | Daughter | Probability | Decay energy | γ energy
(intensity) |
|---|
| β- | 119Sn | 95.6 % | | |
| Iso | 119In | 4.4 % | | |
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 |
|---|
| 119In | | 2.4(1) min | 9/2+ |
| 119m2In | 654.27(7) keV | 130(15) ns | (3/2)+ |
| 119m3In | 2656.9(18) keV | 240(25) ns | (25/2+) |
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 70) and isobaric (same nucleon number A = 119) with Indium-119m. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
| OZ | Isotone N = 70 | Isobar A = 119 |
|---|
| 39 | 109Y | |
| 40 | 110Zr | |
| 41 | 111Nb | |
| 42 | 112Mo | |
| 43 | 113Tc | 119Tc |
| 44 | 114Ru | 119Ru |
| 45 | 115Rh | 119Rh |
| 46 | 116Pd | 119Pd |
| 47 | 117Ag | 119Ag |
| 48 | 118Cd | 119Cd |
| 49 | 119In | 119In |
| 50 | 120Sn | 119Sn |
| 51 | 121Sb | 119Sb |
| 52 | 122Te | 119Te |
| 53 | 123I | 119I |
| 54 | 124Xe | 119Xe |
| 55 | 125Cs | 119Cs |
| 56 | 126Ba | 119Ba |
| 57 | 127La | 119La |
| 58 | 128Ce | 119Ce |
| 59 | 129Pr | |
| 60 | 130Nd | |
| 61 | 131Pm | |
| 62 | 132Sm | |
| 63 | 133Eu | |
| 64 | 134Gd | |
| 65 | 135Tb | |
Last update: 2020-10-17
Perma link: https://www.chemlin.org/isotope/indium-119m
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