Barium-143
Properties and data of the isotope 143Ba.
See also: list of Barium isotopes.
General data
Name of the isotope:Barium-143; Ba-143Symbol:143Ba or 14356BaMass number A:143 (= number of nucleons)Atomic number Z:56 (= number of protons)Neutrons N:87Isotopic mass:142.920625(7) u (atomic weight of Barium-143)Nuclide mass:142.8899066 u (calculated nuclear mass without electrons)Mass excess:-73.93734 MeVMass defect:1.271424484 u (per nucleus)Nuclear binding energy:1184.3242783 MeV (per nucleus)
8.28198796 MeV (average binding energy per nucleon)Separation energy:SN = 4.166(9) MeV (first neutron)
SP = 10.712(10) MeV (first proton)Half-life:14.5(3) sDecay constant λ:0.04780325383172 s-1Specific activity α:2.02730935308 × 10+20 Bq g-1
5479214467.7946 Ci g-1Spin and parity:
(nuclear angular momentum)5/2-Magnetic dipole moment:μ(μN) = + 0.443(11)Quadrupole moment Q:- 0.88(2) barn (100 fm2)Nuclear g-factor:gl = 0.1772Charge radius:4.9087(95) femtometer fmYear of discovery:1962
Radioactive Decay
Half-life T½ = 14.5(3) s respectively 1.45 × 101 seconds s.
| Decay mode | Daughter | Probability | Decay energy | γ energy
(intensity) |
|---|
| β- | 143La | 100 % | 4.234(10) MeV | |
Parent Nuclides
Direct parent isotope is: 143Cs.
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 87) and isobaric (same nucleon number A = 143) with Barium-143. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
| OZ | Isotone N = 87 | Isobar A = 143 |
|---|
| 49 | 136In | |
| 50 | 137Sn | |
| 51 | 138Sb | |
| 52 | 139Te | 143Te |
| 53 | 140I | 143I |
| 54 | 141Xe | 143Xe |
| 55 | 142Cs | 143Cs |
| 56 | 143Ba | 143Ba |
| 57 | 144La | 143La |
| 58 | 145Ce | 143Ce |
| 59 | 146Pr | 143Pr |
| 60 | 147Nd | 143Nd |
| 61 | 148Pm | 143Pm |
| 62 | 149Sm | 143Sm |
| 63 | 150Eu | 143Eu |
| 64 | 151Gd | 143Gd |
| 65 | 152Tb | 143Tb |
| 66 | 153Dy | 143Dy |
| 67 | 154Ho | 143Ho |
| 68 | 155Er | 143Er |
| 69 | 156Tm | |
| 70 | 157Yb | |
| 71 | 158Lu | |
| 72 | 159Hf | |
| 73 | 160Ta | |
| 74 | 161W | |
| 75 | 162Re | |
| 76 | 163Os | |
| 77 | 164Ir | |
External data and identifiers
Last update: 2020-10-19
Perma link: https://www.chemlin.org/isotope/barium-143
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