Iodine-108
Properties and data of the isotope 108I.
See also: list of Iodine isotopes.
General data
Name of the isotope:Iodine-108; I-108Other names:Jod-108Symbol:108I or 10853IMass number A:108 (= number of nucleons)Atomic number Z:53 (= number of protons)Neutrons N:55Isotopic mass:107.94348(14) u (atomic weight of Iodine-108)Nuclide mass:107.9144071 u (calculated nuclear mass without electrons)Mass excess:-52.64804 MeVMass defect:0.94781707600001 u (per nucleus)Nuclear binding energy:882.88591939 MeV (per nucleus)
8.17486962 MeV (average binding energy per nucleon)Separation energy:SN = 11.29(33) MeV (first neutron)Half-life:36(6) msDecay constant λ:19.254088348887 s-1Specific activity α:1.083652637071 × 10+23 Bq g-1
2928790911004.6 Ci g-1Spin and parity:
(nuclear angular momentum)(1)Year of discovery:1991
Radioactive Decay
Half-life T½ = 36(6) ms respectively 3.6 × 10-2 seconds s.
Decay mode | Daughter | Probability | Decay energy | γ energy (intensity) |
---|
α | 104Sb | 91(15) % | 4.10(5) MeV | |
EE/β+ | 108Te | 9 % | 13.13(13) MeV | |
p | 107Te | < 1 % | | |
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 55) and isobaric (same nucleon number A = 108) with Iodine-108. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
OZ | Isotone N = 55 | Isobar A = 108 |
30 | 85Zn | |
31 | 86Ga | |
32 | 87Ge | |
33 | 88As | |
34 | 89Se | |
35 | 90Br | |
36 | 91Kr | |
37 | 92Rb | |
38 | 93Sr | |
39 | 94Y | 108Y |
40 | 95Zr | 108Zr |
41 | 96Nb | 108Nb |
42 | 97Mo | 108Mo |
43 | 98Tc | 108Tc |
44 | 99Ru | 108Ru |
45 | 100Rh | 108Rh |
46 | 101Pd | 108Pd |
47 | 102Ag | 108Ag |
48 | 103Cd | 108Cd |
49 | 104In | 108In |
50 | 105Sn | 108Sn |
51 | 106Sb | 108Sb |
52 | 107Te | 108Te |
53 | 108I | 108I |
54 | 109Xe | |
External data and identifiers
Last update: 2020-10-18
Perma link: https://www.chemlin.org/isotope/iodine-108
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