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Xenon-133

Properties and data of the isotope 133Xe.


Content

See also: list of Xenon isotopes.

 

General data

Name of the isotope:Xenon-133; Xe-133Other names:XeneisolSymbol:133Xe or 13354XeMass number A:133 (= number of nucleons)Atomic number Z:54 (= number of protons)Neutrons N:79Isotopic mass:132.9059107(26) u (atomic weight of Xenon-133)Nuclide mass:132.8762893 u (calculated nuclear mass without electrons)Mass excess:-87.64362 MeVMass defect:1.201169392 u (per nucleus)Nuclear binding energy:1118.88208163 MeV (per nucleus)
8.41264723 MeV (average binding energy per nucleon)
Separation energy:SN = 6.4359(24) MeV (first neutron)
SP = 9.229(5) MeV (first proton)
Half-life:5.2475(5) dDecay constant λ:1.528830264323 × 10-6 s-1Specific activity α:6.974872123249 × 10+15 Bq g-1
188510.05738512 Ci g-1
Spin and parity:
(nuclear angular momentum)
3/2+Magnetic dipole moment:μ(μN) = +0.81335(7)Quadrupole moment Q:0.142(5) barn (100 fm2)Nuclear g-factor:gl = 0.54223333333333Charge radius:4.7831(47) femtometer fmYear of discovery:1940

 

Radioactive Decay

Half-life T½ = 5.2475(5) d respectively 4.53384 × 105 seconds s.

Decay modeDaughterProbabilityDecay energyγ energy
(intensity)
β-133Cs100 %0.4274(24) MeV80.9979(11) keV
36.9 %

 

Parent Nuclides

Direct parent isotope is: 133I.

 

Xenon-133 as a Radionuclide in Medicine

The chemically inert noble gas isotope xenon-133 is one of the radiopharmaceuticals approved for medical applications and can be used as a radiodiagnostic for the respiratory tract (ATC code V09EX03).

 

Nuclear Isomers

Nuclear isomers or excited states with the activation energy in keV related to the ground state.

Nuclear IsomerExcitation EnergyHalf-lifeSpin
133mXe233.221(15) keV2.198(13) d11/2-

 

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 79) and isobaric (same nucleon number A = 133) with Xenon-133. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

 

OZIsotone N = 79Isobar A = 133
44123Ru
45124Rh
46125Pd
47126Ag
48127Cd133Cd
49128In133In
50129Sn133Sn
51130Sb133Sb
52131Te133Te
53132I133I
54133Xe133Xe
55134Cs133Cs
56135Ba133Ba
57136La133La
58137Ce133Ce
59138Pr133Pr
60139Nd133Nd
61140Pm133Pm
62141Sm133Sm
63142Eu133Eu
64143Gd
65144Tb
66145Dy
67146Ho
68147Er
69148Tm
70149Yb
71150Lu

 

External data and identifiers

CAS:14932-42-4InChI Key:FHNFHKCVQCLJFQ-NJFSPNSNSA-NSMILES:[133Xe]PubChem:ID 66376Adopted Levels, Gammas:NuDat 133Xe

 


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Last update: 2023-05-22


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