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

221U     Half-life Fermion, 92p 129n 700 ns Spin 9/2 Parity 1 Hide Decay Modes Probability Mode Decay Energy Daughter Unknown α 9.95MeV 217Th Unknown β+ 3.19MeV 221Pa Show Ultimate Decay Products Atomic Weight 221.026399 Abundance None Mass Excess 24.591MeV Binding Energy 7.634MeV Magnetic Moment N/A Quadrupole Moment N/A   Show Isotope Symbols. Also show decay chains leading to this isotope. Show only decays with probability >0.1%.

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