Cesium-133
Properties and data of the isotope 133Cs.
See also: list of Cesium isotopes.
General data
Name of the isotope:Cesium-133; Cs-133Symbol:133Cs or 13355CsMass number A:133 (= number of nucleons)Atomic number Z:55 (= number of protons)Neutrons N:78Isotopic mass:132.90545196(6) u (atomic weight of Cesium-133)Nuclide mass:132.8752821 u (calculated nuclear mass without electrons)Mass excess:-88.07093 MeVMass defect:1.200788248 u (per nucleus)Nuclear binding energy:1118.52704828 MeV (per nucleus)
8.40997781 MeV (average binding energy per nucleon)Separation energy:SN = 8.9896(10) MeV (first neutron)
SP = 6.08094(1) MeV (first proton)Half-life:stableSpin and parity:
(nuclear angular momentum)7/2+Magnetic dipole moment:μ(μN) = +2.5778(14)Charge radius:4.8041(46) femtometer fmYear of discovery:1921
Parent Nuclides
Direct parent isotopes are: 133Ba, 133Xe.
Occurrence
Comparison of the natural Cesium isotopes including isotopic abundance (mole fraction of the isotope mixture in percent):
| Atomic Mass ma | Quantity | Half-life | Spin |
---|
Cesium Isotopic mixture | 132.90545196 u | 100 % | | |
Isotope 133Cs | 132.90545196(6) u | 100 % | stable | 7/2+ |
NMR data
Nuclear magnetic properties of the NMR active Nuclide 133Cs
Isotope:133Cs-NMRQuantity:100 %Spin:7/2+Nuclearmagnetic moment
μ/μN:+2.5778(14)Gyromagnetic ratio γ:3.5339 · 107 rad T-1 s-1Nuclear g-factor:gl = 0.73651428571429Quadrupole moment Q:- 0.00343(10) barn (100 fm2)Resonance frequency:v0 = 5.6234 at 1 TRelative Sensitivity:0.04838 (H0 = const.)
2.7736 (v0 = const.)
[related to 1H = 1.000]
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 78) and isobaric (same nucleon number A = 133) with Cesium-133. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
Z | Isotone N = 78 | Isobar A = 133 |
43 | 121Tc | |
44 | 122Ru | |
45 | 123Rh | |
46 | 124Pd | |
47 | 125Ag | |
48 | 126Cd | 133Cd |
49 | 127In | 133In |
50 | 128Sn | 133Sn |
51 | 129Sb | 133Sb |
52 | 130Te | 133Te |
53 | 131I | 133I |
54 | 132Xe | 133Xe |
55 | 133Cs | 133Cs |
56 | 134Ba | 133Ba |
57 | 135La | 133La |
58 | 136Ce | 133Ce |
59 | 137Pr | 133Pr |
60 | 138Nd | 133Nd |
61 | 139Pm | 133Pm |
62 | 140Sm | 133Sm |
63 | 141Eu | 133Eu |
64 | 142Gd | |
65 | 143Tb | |
66 | 144Dy | |
67 | 145Ho | |
68 | 146Er | |
69 | 147Tm | |
70 | 148Yb | |
71 | 149Lu | |
External data and identifiers
Last update: 2023-05-02
Perma link: https://www.chemlin.org/isotope/cesium-133
© 1996 - 2024 ChemLin