Cesium-130
Properties and data of the isotope 130Cs.
See also: List of individual Cesium isotopes (and general data sources).
General data
Name of the isotope:Cesium-130; Cs-130Symbol:130Cs or 13055CsMass number A:130 (= number of nucleons)Atomic number Z:55 (= number of protons)Neutrons N:75Nucleon pairing (Z - N):odd - oddNuclear ratio (N/Z ratio):1.3636363636364 (= neutron-proton ratio)Neutron excess (N-Z):20Isotopic mass:129.906709(9) u (atomic weight of Cesium-130)Nuclide mass:129.8765391 u (calculated nuclear mass without electrons)Mass excess:-86.90001 MeVMass defect:1.17353646 u (per nucleus)Nuclear binding energy:1093.14217127 MeV (per nucleus)
8.40878593 MeV (average binding energy per nucleon)Separation energy:SN = 7.472(10) MeV (first neutron)
SP = 5.493(8) MeV (first proton)Half-life:29.21(4) minDecay constant λ:0.00039549650836468 s-1Specific activity α:1.846306730996 × 10+18 Bq g-1
49900181.918819 Ci g-1Spin and parity:
(nuclear angular momentum)1+Magnetic dipole moment:μ(μN) = +1.458(7)Quadrupole moment Q:- 0.059(6) barn (100 fm2)Nuclear g-factor:gl = 1.458Charge radius:4.7992(49) femtometer fmYear of discovery:1952
Radioactive Decay
Half-life T½ = 29.21(4) min (minutes) respectively 1.7526 × 103 seconds s.
Decay
mode | Daughter | Probability | Decay energy | γ energy
(intensity) |
|---|
| EC/β+ | 130Xe | 98.4 % | 2.981(8) MeV | |
| β- | 130Ba | 1.6 % | 0.362(9) MeV | |
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 |
|---|
| 130mCs | 163.25(11) keV | 3.46(6) min | 5- |
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 75) and isobaric (same nucleon number A = 130) with Cesium-130. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
| Z | Isotone N = 75 | Isobar A = 130 |
|---|
| 42 | 117Mo | |
| 43 | 118Tc | |
| 44 | 119Ru | |
| 45 | 120Rh | |
| 46 | 121Pd | |
| 47 | 122Ag | 130Ag |
| 48 | 123Cd | 130Cd |
| 49 | 124In | 130In |
| 50 | 125Sn | 130Sn |
| 51 | 126Sb | 130Sb |
| 52 | 127Te | 130Te |
| 53 | 128I | 130I |
| 54 | 129Xe | 130Xe |
| 55 | 130Cs | 130Cs |
| 56 | 131Ba | 130Ba |
| 57 | 132La | 130La |
| 58 | 133Ce | 130Ce |
| 59 | 134Pr | 130Pr |
| 60 | 135Nd | 130Nd |
| 61 | 136Pm | 130Pm |
| 62 | 137Sm | 130Sm |
| 63 | 138Eu | 130Eu |
| 64 | 139Gd | |
| 65 | 140Tb | |
| 66 | 141Dy | |
| 67 | 142Ho | |
| 68 | 143Er | |
| 69 | 144Tm | |
External data and identifiers
Last update: 2020-10-18
Perma link: https://www.chemlin.org/isotope/cesium-130
© 1996 - 2026 ChemLin
