H Home Background Color: He Li Be Radium Main Page Black White Gray B C N O F Ne Na Mg Radium Pictures Page Al Si P S Cl Ar K Ca Radium 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 Radium (click to see decay chain): 202Ra  203Ra  204Ra  205Ra  206Ra  207Ra  208Ra  209Ra  210Ra  211Ra  212Ra  213Ra  214Ra  215Ra  216Ra  217Ra  218Ra  219Ra  220Ra  221Ra  222Ra  223Ra  224Ra  225Ra  226Ra  227Ra  228Ra  229Ra  230Ra  231Ra  232Ra  233Ra  234Ra

226Ra     Half-life Boson, 88p 138n 1585.489599188 y Spin 0 Parity 1 Hide Decay Modes Probability Mode Decay Energy Daughter 100% α 4.87062MeV 222Rn 2.6×10-9% 14C N/A 212Pb Unknown 2β- 472.04keV 226Th Show Ultimate Decay Products Atomic Weight 226.025409823 Abundance None Mass Excess 23.669099MeV Binding Energy 7.661956MeV Magnetic Moment 0 μ Quadrupole Moment N/A   Show Element Pictures. Show only decay products of this isotope. Show Decay Image Smaller.

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