Tellurium-136
Properties and data of the isotope 136Te.
See also: List of individual Tellurium isotopes (and general data sources).
General data
Name of the isotope:Tellurium-136; Te-136Symbol:136Te or 13652TeMass number A:136 (= number of nucleons)Atomic number Z:52 (= number of protons)Neutrons N:84Nucleon pairing (Z - N):even - evenNuclear ratio (N/Z ratio):1.6153846153846 (= neutron-proton ratio)Neutron excess (N-Z):32Isotopic mass:135.9201012(24) u (atomic weight of Tellurium-136)Nuclide mass:135.8915768 u (calculated nuclear mass without electrons)Mass excess:-74.42525 MeVMass defect:1.214653408 u (per nucleus)Nuclear binding energy:1131.44236163 MeV (per nucleus)
8.31942913 MeV (average binding energy per nucleon)Separation energy:SN = 4.7678(29) MeV (first neutron)
SP = 12.024(3) MeV (first proton)Half-life:17.63(8) sDecay constant λ:0.039316346032895 s-1Specific activity α:1.753841288208 × 10+20 Bq g-1
4740111589.7519 Ci g-1Spin and parity:
(nuclear angular momentum)0+Charge radius:4.7815(89) femtometer fmYear of discovery:1974
Radioactive Decay
Half-life T½ = 17.63(8) s respectively 1.763 × 101 seconds s.
Decay
mode | Daughter | Probability | Decay energy | γ energy
(intensity) |
|---|
| β- | 136I | 98.69 % | 5.120(14) MeV | |
| β-, n | 135I | 1.31 % | 1.283(3) MeV | |
Parent Nuclides
Direct parent isotopes are: 136Sb, 248Cm, 252Cf.
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 84) and isobaric (same nucleon number A = 136) with Tellurium-136. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
| Z | Isotone N = 84 | Isobar A = 136 |
|---|
| 47 | 131Ag | |
| 48 | 132Cd | |
| 49 | 133In | 136In |
| 50 | 134Sn | 136Sn |
| 51 | 135Sb | 136Sb |
| 52 | 136Te | 136Te |
| 53 | 137I | 136I |
| 54 | 138Xe | 136Xe |
| 55 | 139Cs | 136Cs |
| 56 | 140Ba | 136Ba |
| 57 | 141La | 136La |
| 58 | 142Ce | 136Ce |
| 59 | 143Pr | 136Pr |
| 60 | 144Nd | 136Nd |
| 61 | 145Pm | 136Pm |
| 62 | 146Sm | 136Sm |
| 63 | 147Eu | 136Eu |
| 64 | 148Gd | 136Gd |
| 65 | 149Tb | 136Tb |
| 66 | 150Dy | |
| 67 | 151Ho | |
| 68 | 152Er | |
| 69 | 153Tm | |
| 70 | 154Yb | |
| 71 | 155Lu | |
| 72 | 156Hf | |
| 73 | 157Ta | |
| 74 | 158W | |
| 75 | 159Re | |
| 76 | 160Os | |
External data and identifiers
Literature and References
[1] - R. C. Greenwood, K. D. Watts:
Delayed Neutron Energy Spectra of 87Br, 88Br, 89Br, 90Br, 137I, 138I, 139I, and 136Te.
In: Nuclear Science and Engineering, Volume 126, (2017), DOI 10.13182/NSE97-A24484.
Last update: 2023-04-27
Perma link: https://www.chemlin.org/isotope/tellurium-136
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