H Home Background Color: He Li Be Promethium Main Page Black White Gray B C N O F Ne Na Mg Promethium Pictures Page Al Si P S Cl Ar K Ca Promethium Technical Data Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe Cs Ba La Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn Fr Ra Ac Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr Rf Db Sg Bh Hs Mt Ds Rg Cn Nh Fl Mc Lv Ts Og

Isotopes of Promethium (click to see decay chain): 126Pm  127Pm  128Pm  129Pm  130Pm  131Pm  132Pm  133Pm  134Pm  135Pm  136Pm  137Pm  138Pm  139Pm  140Pm  141Pm  142Pm  143Pm  144Pm  145Pm  146Pm  147Pm  148Pm  149Pm  150Pm  151Pm  152Pm  153Pm  154Pm  155Pm  156Pm  157Pm  158Pm  159Pm  160Pm  161Pm  162Pm  163Pm

128Pm     Half-life Fermion, 61p 67n 1 s Spin 6 Parity 1 Hide Decay Modes Probability Mode Decay Energy Daughter 100% β+ 11.115MeV 128Nd None p 88keV 127Nd Unknown β+p N/A 127Pr Hide Ultimate Decay Products Yield Nuclide Unknown 128Xe Unknown 126Te Unknown 127I Atomic Weight 127.94842 Abundance None Mass Excess -48.046MeV Binding Energy 8.074MeV Magnetic Moment N/A Quadrupole Moment N/A   Show Isotope Symbols. Also show decay chains leading to this isotope. Show all decays, even very low-probability.

Click any isotope in diagram to see its data. Decay chain image generated by Mathematica's GraphPlot and IsotopeData functions from Wolfram Research, Inc..