Assertion: astatine's isotope | /r/HasProperty | lived
Facets:
value: very short
type: DEGREE
value: as the most stable radioactive isotope
type: OTHER
Source sentences:
text: Isotopes of astatine are very short lived, as the most stable radioactive isotope, astatine-210, has a half-life of around 8 hours.
text: The known isotopes of tennessine, 293Ts and 294Ts, are too short-lived to allow for chemical experimentation at present.