Assertion: californium's isotope | /r/HasProperty | short-lived
Facets:
value: on a geologic time-scale
type: OTHER
value: comparatively
type: MANNER
Source sentences:
text: Lower mass fermium isotopes are available in greater quantities, though these isotopes (254Fm and 255Fm) are comparatively short-lived.
text: The most available isotopes of californium are short-lived on a geologic time-scale, and are only available in small quantities.