Assertion: radon's life | /r/HasProperty | 2000 times that
Facets:
Source sentences:
text: At this stage, the predominant residual activity is due to the radon decay product 210Pb, whose half-life (22.3 year) is 2000 times that of radon (and whose activity is thus 1/2000 of radon's), and its descendants 210Bi and 210Po, totalizing 0.03% of the initial seed activity.