Xenon-143
Properties and data of the isotope 143Xe.
See also: List of individual Xenon isotopes (and general data sources).
General data
Name of the isotope:Xenon-143; Xe-143Symbol:143Xe or 14354XeMass number A:143 (= number of nucleons)Atomic number Z:54 (= number of protons)Neutrons N:89Nucleon pairing (Z - N):even - oddNuclear ratio (N/Z ratio):1.6481481481481 (= neutron-proton ratio)Neutron excess (N-Z):35Isotopic mass:142.935370(5) u (atomic weight of Xenon-143)Nuclide mass:142.9057486 u (calculated nuclear mass without electrons)Mass excess:-60.20246 MeVMass defect:1.258359252 u (per nucleus)Nuclear binding energy:1172.15409308 MeV (per nucleus)
8.19688177 MeV (average binding energy per nucleon)Separation energy:SN = 3.045(5) MeV (first neutron)
SP = 12.72(37) MeV (first proton)Half-life:511(6) msDecay constant λ:1.3564524081408 s-1Specific activity α:5.752639064524 × 10+21 Bq g-1
155476731473.62 Ci g-1Spin and parity:
(nuclear angular momentum)5/2-Magnetic dipole moment:μ(μN) = -0.460(2)Quadrupole moment Q:+0.93(3) barn (100 fm2)Nuclear g-factor:gl = -0.184Charge radius:4.8942(187) femtometer fmYear of discovery:1951
Radioactive Decay
Half-life T½ = 511(6) ms respectively 5.11 × 10-1 seconds s.
Decay
mode | Daughter | Probability | Decay energy | γ energy
(intensity) |
|---|
| β- | 143Cs | < 100 % | 7.473(9) MeV | |
| β-, n | 142Cs | > 0 % | 2.240(8) MeV | |
Parent Nuclides
Direct parent isotope is: 248Cm.
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 89) and isobaric (same nucleon number A = 143) with Xenon-143. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
| Z | Isotone N = 89 | Isobar A = 143 |
|---|
| 50 | 139Sn | |
| 51 | 140Sb | |
| 52 | 141Te | 143Te |
| 53 | 142I | 143I |
| 54 | 143Xe | 143Xe |
| 55 | 144Cs | 143Cs |
| 56 | 145Ba | 143Ba |
| 57 | 146La | 143La |
| 58 | 147Ce | 143Ce |
| 59 | 148Pr | 143Pr |
| 60 | 149Nd | 143Nd |
| 61 | 150Pm | 143Pm |
| 62 | 151Sm | 143Sm |
| 63 | 152Eu | 143Eu |
| 64 | 153Gd | 143Gd |
| 65 | 154Tb | 143Tb |
| 66 | 155Dy | 143Dy |
| 67 | 156Ho | 143Ho |
| 68 | 157Er | 143Er |
| 69 | 158Tm | |
| 70 | 159Yb | |
| 71 | 160Lu | |
| 72 | 161Hf | |
| 73 | 162Ta | |
| 74 | 163W | |
| 75 | 164Re | |
| 76 | 165Os | |
| 77 | 166Ir | |
| 78 | 167Pt | |
External data and identifiers
Last update: 2020-10-18
Perma link: https://www.chemlin.org/isotope/xenon-143
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