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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

203Ra     Half-life Fermion, 88p 115n 31 ms Spin 3/2 Parity -1 Hide Decay Modes Probability Mode Decay Energy Daughter 100% α 7.7296MeV 199Rn Unknown β+ 6.753MeV 203Fr Hide Ultimate Decay Products Yield Nuclide 28.84% 195Pt 0.009165% 187Os 1.4401881×10-10% 179Hf Unknown 203Tl Unknown 199Hg Unknown 191Ir Atomic Weight 203.009271619 Abundance None Mass Excess 8.636458MeV Binding Energy 7.689628MeV Magnetic Moment N/A Quadrupole Moment N/A   Show Element Pictures. Also show decay chains leading to this isotope. Show only decays with probability >0.1%. Show Decay Image Full Size.

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