Assertion: actinium's isotope | /r/HasProperty | evaluated for application
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text: In contrast to very short-lived isotopes such as 213Bi (t 1/2 = 46 minutes) and 211At (t 1/2 = 7.2 hours) that have been evaluated for these applications, the day-scale decay of the now easily accessible 225Ac makes it a seemingly ideal candidate for destroying tumour cells.