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Praseodymium-136

Properties and data of the isotope 136Pr.


Content

See also: list of Praseodymium isotopes.

 

General data

Name of the isotope:Praseodymium-136; Pr-136Symbol:136Pr or 13659PrMass number A:136 (= number of nucleons)Atomic number Z:59 (= number of protons)Neutrons N:77Isotopic mass:135.912678(12) u (atomic weight of Praseodymium-136)Nuclide mass:135.8803142 u (calculated nuclear mass without electrons)Mass excess:-81.33992 MeVMass defect:1.21619742 u (per nucleus)Nuclear binding energy:1132.88059955 MeV (per nucleus)
8.33000441 MeV (average binding energy per nucleon)
Separation energy:SN = 8.476(16) MeV (first neutron)
SP = 4.013(15) MeV (first proton)
Half-life:13.1(1) minDecay constant λ:0.00088186664193377 s-1Specific activity α:3.933870472151 × 10+18 Bq g-1
106320823.57166 Ci g-1
Spin and parity:
(nuclear angular momentum)
2+Year of discovery:1968

 

Radioactive Decay

Half-life T½ = 13.1(1) min (minutes) respectively 7.86 × 102 seconds s.

Decay modeDaughterProbabilityDecay energyγ energy
(intensity)
EE/β+136Ce100 %5.168(11) MeV

 

Parent Nuclides

Direct parent isotope is: 136Nd.

 

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 77) and isobaric (same nucleon number A = 136) with Praseodymium-136. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

 

OZIsotone N = 77Isobar A = 136
43120Tc
44121Ru
45122Rh
46123Pd
47124Ag
48125Cd
49126In136In
50127Sn136Sn
51128Sb136Sb
52129Te136Te
53130I136I
54131Xe136Xe
55132Cs136Cs
56133Ba136Ba
57134La136La
58135Ce136Ce
59136Pr136Pr
60137Nd136Nd
61138Pm136Pm
62139Sm136Sm
63140Eu136Eu
64141Gd136Gd
65142Tb136Tb
66143Dy
67144Ho
68145Er
69146Tm

 

External data and identifiers

Adopted Levels, Gammas:NuDat 136Pr

 


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Last update: 2020-10-19


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