Assertion: plutonium's isotope | /r/CapableOf | take the lead
Facets:
value: over long time scales
type: OTHER
Source sentences:
text: Over long time scales, the longer-lived isotopes 239, 240 and 242 will take the lead , but owing to the decays of the short-lived isotopes, the plutonium activity and toxicity wille have so far declined.