Xenon-144
Properties and data of the isotope 144Xe.
See also: List of individual Xenon isotopes (and general data sources).
General data
Name of the isotope:Xenon-144; Xe-144Symbol:144Xe or 14454XeMass number A:144 (= number of nucleons)Atomic number Z:54 (= number of protons)Neutrons N:90Nucleon pairing (Z - N):even - evenNuclear ratio (N/Z ratio):1.6666666666667 (= neutron-proton ratio)Neutron excess (N-Z):36Isotopic mass:143.938945(6) u (atomic weight of Xenon-144)Nuclide mass:143.9093236 u (calculated nuclear mass without electrons)Mass excess:-56.87237 MeVMass defect:1.263449168 u (per nucleus)Nuclear binding energy:1176.8953193 MeV (per nucleus)
8.17288416 MeV (average binding energy per nucleon)Separation energy:SN = 4.741(7) MeV (first neutron)
SP = 13.53(20) MeV (first proton)Half-life:1.15(20) sDecay constant λ:0.60273667874778 s-1Specific activity α:2.538297329279 × 10+21 Bq g-1
68602630521.065 Ci g-1Spin and parity:
(nuclear angular momentum)0+Charge radius:4.9082(208) femtometer fmYear of discovery:2003
Radioactive Decay
Half-life T½ = 1.15(20) s.
Decay
mode | Daughter | Probability | Decay energy | γ energy
(intensity) |
|---|
| β- | 144Cs | 100 % | 6.399(21) MeV | |
Parent Nuclides
Direct parent isotopes are: 248Cm, 144I.
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 90) and isobaric (same nucleon number A = 144) with Xenon-144. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
| Z | Isotone N = 90 | Isobar A = 144 |
|---|
| 50 | 140Sn | |
| 51 | 141Sb | |
| 52 | 142Te | |
| 53 | 143I | 144I |
| 54 | 144Xe | 144Xe |
| 55 | 145Cs | 144Cs |
| 56 | 146Ba | 144Ba |
| 57 | 147La | 144La |
| 58 | 148Ce | 144Ce |
| 59 | 149Pr | 144Pr |
| 60 | 150Nd | 144Nd |
| 61 | 151Pm | 144Pm |
| 62 | 152Sm | 144Sm |
| 63 | 153Eu | 144Eu |
| 64 | 154Gd | 144Gd |
| 65 | 155Tb | 144Tb |
| 66 | 156Dy | 144Dy |
| 67 | 157Ho | 144Ho |
| 68 | 158Er | 144Er |
| 69 | 159Tm | 144Tm |
| 70 | 160Yb | |
| 71 | 161Lu | |
| 72 | 162Hf | |
| 73 | 163Ta | |
| 74 | 164W | |
| 75 | 165Re | |
| 76 | 166Os | |
| 77 | 167Ir | |
| 78 | 168Pt | |
| 80 | 170Hg | |
External data and identifiers
Last update: 2023-05-15
Perma link: https://www.chemlin.org/isotope/xenon-144
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