Assertion: polonium's isotope | /r/AtLocation | trace
Facets:
value: as decay products
type: MANNER
Source sentences:
text: Seven isotopes occur in traces as decay products: 210Po, 214Po, and 218Po occur in the decay chain of 238U; 211Po and 215Po occur in the decay chain of 235U; 212Po and 216Po occur in the decay chain of 232Th.