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Praseodymium-142

Praseodymium-142
Algemeen
Element praseodymium (Pr)
Nuclide 142Pr
Aantal protonen 59
Aantal neutronen 83
Nuclidische gegevens
Nuclidenmassa 141,910044806 u
Spin 2
Bindingsenergie 8,336347 MeV
Massaoverschot −83,792724 MeV
Vervalgegevens
Halveringstijd 19,1194 uur
Isotopen van praseodymium
Portaal  Portaalicoon   Scheikunde
Natuurkunde

Praseodymium-142 of 142Pr is een onstabiele radioactieve isotoop van praseodymium, een lanthanide. De isotoop komt van nature niet op Aarde voor.

Radioactief verval

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Praseodymium-142 bezit een halveringstijd van ongeveer 19 uur. Het vervalt vrijwel volledig (99,98%) naar de stabiele isotoop neodymium-142:

De vervalenergie hiervan bedraagt 2,16247 MeV.

De rest (0,0164%) vervalt tot de stabiele isotoop cerium-142:

De vervalenergie bedraagt 745,75 keV.

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Praseodymium-142
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