Iodine-136
Properties and data of the isotope 136I.
See also: List of individual Iodine isotopes (and general data sources).
General data
Name of the isotope:Iodine-136; I-136Other names:Jod-136Symbol:136I or 13653IMass number A:136 (= number of nucleons)Atomic number Z:53 (= number of protons)Neutrons N:83Isotopic mass:135.914605(15) u (atomic weight of Iodine-136)Nuclide mass:135.8855321 u (calculated nuclear mass without electrons)Mass excess:-79.54493 MeVMass defect:1.219309724 u (per nucleus)Nuclear binding energy:1135.77969205 MeV (per nucleus)
8.35132127 MeV (average binding energy per nucleon)Separation energy:SN = 3.837(14) MeV (first neutron)
SP = 9.105(15) MeV (first proton)Half-life:83.4(10) sDecay constant λ:0.008311117272901 s-1Specific activity α:3.707460660804 × 10+19 Bq g-1
1002016394.8121 Ci g-1Spin and parity:
(nuclear angular momentum)(1-)Year of discovery:1949
Radioactive Decay
Half-life T½ = 83.4(10) s respectively 8.34 × 101 seconds s.
Decay
mode | Daughter | Probability | Decay energy | γ energy
(intensity) |
|---|
| β- | 136Xe | 100 % | 6.884(14) MeV | |
Parent Nuclides
Direct parent isotopes are: 136Te, 137Te, 248Cm, 252Cf.
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 |
|---|
| 136mI | 201(26) keV | 46.6(11) s | (6-) |
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 83) and isobaric (same nucleon number A = 136) with Iodine-136. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
| Z | Isotone N = 83 | Isobar A = 136 |
|---|
| 46 | 129Pd | |
| 47 | 130Ag | |
| 48 | 131Cd | |
| 49 | 132In | 136In |
| 50 | 133Sn | 136Sn |
| 51 | 134Sb | 136Sb |
| 52 | 135Te | 136Te |
| 53 | 136I | 136I |
| 54 | 137Xe | 136Xe |
| 55 | 138Cs | 136Cs |
| 56 | 139Ba | 136Ba |
| 57 | 140La | 136La |
| 58 | 141Ce | 136Ce |
| 59 | 142Pr | 136Pr |
| 60 | 143Nd | 136Nd |
| 61 | 144Pm | 136Pm |
| 62 | 145Sm | 136Sm |
| 63 | 146Eu | 136Eu |
| 64 | 147Gd | 136Gd |
| 65 | 148Tb | 136Tb |
| 66 | 149Dy | |
| 67 | 150Ho | |
| 68 | 151Er | |
| 69 | 152Tm | |
| 70 | 153Yb | |
| 71 | 154Lu | |
| 72 | 155Hf | |
| 73 | 156Ta | |
| 74 | 157W | |
External data and identifiers
Last update: 2020-10-18
Perma link: https://www.chemlin.org/isotope/iodine-136
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