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Table 1 Decay chain of 223Ra and its progeny to stable 207Pb (from [6])

From: Radiopharmacokinetic modelling and radiation dose assessment of 223Ra used for treatment of metastatic castration-resistant prostate cancer

Radionuclide Decay mode Abundance (%) Half-life
223Ra ➔ 219Rn α 100 11.43 d
219Rn ➔ 215Po α 100 3.96 s
215Po ➔ 211Pb α 100 1.78 ms
211Pb ➔ 211Bi β- 100 36.1 min
211Bi ➔ 211Po β- 0.276 2.14 min
211Bi ➔ 207TI α 99.72 2.14 min
211Po ➔ 207Pb α 100 0.516 s
207TI ➔ 207Pb β- 100 4.77 min