Assertion: berkelium's isotope | /r/HasAspect | a half-life of only 320 days
Facets:
value: largely
type: DEGREE
Source sentences:
text: However, its only available isotope, 249Bk, has a half-life of only 320 days, which has greatly curtailed the expansion of its chemistry and fundamental exploration of how large relativistic and spin-orbit coupling effects alter its electronic structure.
text: Berkelium is one of the few elements that has yet to be characterized in detail, largely because the only available isotope, 249Bk, has a half-life of only 320 days.