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 Element Pictures. Show only decay products of this isotope.

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