Promethium-143
Properties and data of the isotope 143Pm.
See also: list of Promethium isotopes.
General data
Name of the isotope:Promethium-143; Pm-143Symbol:143Pm or 14361PmMass number A:143 (= number of nucleons)Atomic number Z:61 (= number of protons)Neutrons N:82Isotopic mass:142.910938(3) u (atomic weight of Promethium-143)Nuclide mass:142.8774772 u (calculated nuclear mass without electrons)Mass excess:-82.96072 MeVMass defect:1.276912064 u (per nucleus)Nuclear binding energy:1189.43592614 MeV (per nucleus)
8.31773375 MeV (average binding energy per nucleon)Separation energy:SN = 9.890(24) MeV (first neutron)
SP = 4.2996(27) MeV (first proton)Half-life:265(7) dDecay constant λ:3.026843583231 × 10-8 s-1Specific activity α:1.283667494310 × 10+14 Bq g-1
3469.3716062454 Ci g-1Spin and parity:
(nuclear angular momentum)5/2+Magnetic dipole moment:μ(μN) = + 3.80Year of discovery:1952
Radioactive Decay
Half-life T½ = 265(7) d respectively 2.29 × 107 seconds s.
Decay mode | Daughter | Probability | Decay energy | γ energy (intensity) |
---|
EC/β+ | 143Nd | 100 % | 3.443(4) MeV | |
Parent Nuclides
Direct parent isotopes are: 143Sm, 147Eu.
NMR data
Nuclear magnetic properties of the NMR active Nuclide 143Pm
Isotope:143Pm-NMRQuantity:Does not occur in nature!Spin:5/2+Nuclearmagnetic moment
μ/μN:+ 3.80Nuclear g-factor:gl = 1.52Quadrupole moment Q:- 0.33 barn (100 fm2)Resonance frequency:v0 = 11.59 at 1 TRelative Sensitivity:0.23510 (H0 = const.)
3.1748 (v0 = const.)
[related to 1H = 1.000]
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 82) and isobaric (same nucleon number A = 143) with Promethium-143. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
Z | Isotone N = 82 | Isobar A = 143 |
45 | 127Rh | |
46 | 128Pd | |
47 | 129Ag | |
48 | 130Cd | |
49 | 131In | |
50 | 132Sn | |
51 | 133Sb | |
52 | 134Te | 143Te |
53 | 135I | 143I |
54 | 136Xe | 143Xe |
55 | 137Cs | 143Cs |
56 | 138Ba | 143Ba |
57 | 139La | 143La |
58 | 140Ce | 143Ce |
59 | 141Pr | 143Pr |
60 | 142Nd | 143Nd |
61 | 143Pm | 143Pm |
62 | 144Sm | 143Sm |
63 | 145Eu | 143Eu |
64 | 146Gd | 143Gd |
65 | 147Tb | 143Tb |
66 | 148Dy | 143Dy |
67 | 149Ho | 143Ho |
68 | 150Er | 143Er |
69 | 151Tm | |
70 | 152Yb | |
71 | 153Lu | |
72 | 154Hf | |
73 | 155Ta | |
74 | 156W | |
External data and identifiers
Last update: 2020-10-20
Perma link: https://www.chemlin.org/isotope/promethium-143
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