Indium-108
Properties and data of the isotope 108In.
See also: List of individual Indium isotopes (and general data sources).
General data
Name of the isotope:Indium-108; In-108Symbol:108In or 10849InMass number A:108 (= number of nucleons)Atomic number Z:49 (= number of protons)Neutrons N:59Nucleon pairing (Z - N):odd - oddNuclear ratio (N/Z ratio):1.2040816326531 (= neutron-proton ratio)Neutron excess (N-Z):10Isotopic mass:107.909694(9) u (atomic weight of Indium-108)Nuclide mass:107.8828151 u (calculated nuclear mass without electrons)Mass excess:-84.1195 MeVMass defect:0.984962612 u (per nucleus)Nuclear binding energy:917.4867633 MeV (per nucleus)
8.49524781 MeV (average binding energy per nucleon)Separation energy:SN = 8.627(14) MeV (first neutron)
SP = 4.419(9) MeV (first proton)Half-life:58.0(12) minDecay constant λ:0.00019918022429883 s-1Specific activity α:1.121019969384 × 10+18 Bq g-1
30297837.010392 Ci g-1Spin and parity:
(nuclear angular momentum)7+Magnetic dipole moment:μ(μN) = +4.554(3)Nuclear g-factor:gl = 0.65057142857143Charge radius:4.5571(71) femtometer fmYear of discovery:1949
Radioactive Decay
Half-life T½ = 58.0(12) min (minutes) respectively 3.480 × 103 seconds s.
Decay
mode | Daughter | Probability | Decay energy | γ energy
(intensity) |
|---|
| EC/β+ | 108Cd | 100 % | 5.133(9) MeV | |
Parent Nuclides
Direct parent isotope is: 108Sn.
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 |
|---|
| 108mIn | 29.75(5) keV | 39.6(7) min | 2+ |
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 59) and isobaric (same nucleon number A = 108) with Indium-108. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
| Z | Isotone N = 59 | Isobar A = 108 |
|---|
| 33 | 92As | |
| 34 | 93Se | |
| 35 | 94Br | |
| 36 | 95Kr | |
| 37 | 96Rb | |
| 38 | 97Sr | |
| 39 | 98Y | 108Y |
| 40 | 99Zr | 108Zr |
| 41 | 100Nb | 108Nb |
| 42 | 101Mo | 108Mo |
| 43 | 102Tc | 108Tc |
| 44 | 103Ru | 108Ru |
| 45 | 104Rh | 108Rh |
| 46 | 105Pd | 108Pd |
| 47 | 106Ag | 108Ag |
| 48 | 107Cd | 108Cd |
| 49 | 108In | 108In |
| 50 | 109Sn | 108Sn |
| 51 | 110Sb | 108Sb |
| 52 | 111Te | 108Te |
| 53 | 112I | 108I |
| 54 | 113Xe | |
| 55 | 114Cs | |
| 56 | 115Ba | |
| 57 | 116La | |
External data and identifiers
Last update: 2020-10-16
Perma link: https://www.chemlin.org/isotope/indium-108
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