Tellurium-133
Properties and data of the isotope 133Te.
See also: List of individual Tellurium isotopes (and general data sources).
General data
Name of the isotope:Tellurium-133; Te-133Symbol:133Te or 13352TeMass number A:133 (= number of nucleons)Atomic number Z:52 (= number of protons)Neutrons N:81Isotopic mass:132.9109633(22) u (atomic weight of Tellurium-133)Nuclide mass:132.8824389 u (calculated nuclear mass without electrons)Mass excess:-82.93715 MeVMass defect:1.19779656 u (per nucleus)Nuclear binding energy:1115.74030886 MeV (per nucleus)
8.38902488 MeV (average binding energy per nucleon)Separation energy:SN = 5.820(4) MeV (first neutron)
SP = 10.591(3) MeV (first proton)Half-life:12.5(3) minDecay constant λ:0.00092419624074659 s-1Specific activity α:4.216393896969 × 10+18 Bq g-1
113956591.80999 Ci g-1Spin and parity:
(nuclear angular momentum)(3/2+)Magnetic dipole moment:μ(μN) = 0.85(2)Quadrupole moment Q:0.23(9) barn (100 fm2)Nuclear g-factor:gl = 0.56666666666667Year of discovery:1940
Radioactive Decay
Half-life T½ = 12.5(3) min (minutes) respectively 7.50 × 102 seconds s.
Decay
mode | Daughter | Probability | Decay energy | γ energy
(intensity) |
|---|
| β- | 133I | 100 % | 2.921(7) MeV | |
Parent Nuclides
Direct parent isotope is: 133Sb.
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 |
|---|
| 133mTe | 334.26(4) keV | 55.4(4) min | (11/2-) |
| 133m+Te | | | |
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 81) and isobaric (same nucleon number A = 133) with Tellurium-133. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
| Z | Isotone N = 81 | Isobar A = 133 |
|---|
| 45 | 126Rh | |
| 46 | 127Pd | |
| 47 | 128Ag | |
| 48 | 129Cd | 133Cd |
| 49 | 130In | 133In |
| 50 | 131Sn | 133Sn |
| 51 | 132Sb | 133Sb |
| 52 | 133Te | 133Te |
| 53 | 134I | 133I |
| 54 | 135Xe | 133Xe |
| 55 | 136Cs | 133Cs |
| 56 | 137Ba | 133Ba |
| 57 | 138La | 133La |
| 58 | 139Ce | 133Ce |
| 59 | 140Pr | 133Pr |
| 60 | 141Nd | 133Nd |
| 61 | 142Pm | 133Pm |
| 62 | 143Sm | 133Sm |
| 63 | 144Eu | 133Eu |
| 64 | 145Gd | |
| 65 | 146Tb | |
| 66 | 147Dy | |
| 67 | 148Ho | |
| 68 | 149Er | |
| 69 | 150Tm | |
| 70 | 151Yb | |
| 71 | 152Lu | |
| 72 | 153Hf | |
External data and identifiers
Last update: 2020-10-18
Perma link: https://www.chemlin.org/isotope/tellurium-133
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