H Home Background Color: He Li Be Praseodymium Main Page Black White Gray B C N O F Ne Na Mg Praseodymium Pictures Page Al Si P S Cl Ar K Ca Praseodymium 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 Praseodymium (click to see decay chain): 121Pr  122Pr  123Pr  124Pr  125Pr  126Pr  127Pr  128Pr  129Pr  130Pr  131Pr  132Pr  133Pr  134Pr  135Pr  136Pr  137Pr  138Pr  139Pr  140Pr  141Pr  142Pr  143Pr  144Pr  145Pr  146Pr  147Pr  148Pr  149Pr  150Pr  151Pr  152Pr  153Pr  154Pr  155Pr  156Pr  157Pr  158Pr  159Pr

139Pr     Half-life Boson, 59p 80n 4.416666666667 h Spin 5/2 Parity 1 Show Decay Modes Show Ultimate Decay Products Atomic Weight 138.908938399 Abundance None Mass Excess -84.823335MeV Binding Energy 8.349482MeV 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..