H Home Background Color: He Li Be Uranium Main Page Black White Gray B C N O F Ne Na Mg Uranium Pictures Page Al Si P S Cl Ar K Ca Uranium 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 Uranium (click to see decay chain): 217U  218U  219U  220U  221U  222U  223U  224U  225U  226U  227U  228U  229U  230U  231U  232U  233U  234U  235U  236U  237U  238U  239U  240U  241U  242U

231U     Half-life Fermion, 92p 139n 4.166666666667 d Spin 5/2 Parity -1 Hide Decay Modes Probability Mode Decay Energy Daughter 100% ϵ 381.65keV 231Pa 0.004% α 5.57628MeV 227Th Hide Ultimate Decay Products Yield Nuclide 100.2803247141% 207Pb 8.900356×10-8% 205Tl 9.9×10-13% 208Pb Atomic Weight 231.036293704 Abundance None Mass Excess 33.807368MeV Binding Energy 7.613381MeV Magnetic Moment N/A Quadrupole Moment N/A   Show Isotope Symbols. Show only decay products of this isotope. Show Decay Image Full Size.

Decay chain image generated by Mathematica's GraphPlot and IsotopeData functions from Wolfram Research, Inc..