Assertion: lr's isotope | /r/HasAspect | shorter half-lives
Facets:
value: usually
type: TEMPORAL
value: for 254rf
type: TEMPORAL
value: for 253rf
type: TEMPORAL
value: out of isotopes
type: OTHER
Source sentences:
text: Out of isotopes whose half-lives are known, the lighter isotopes usually have shorter half-lives; half-lives of under 50 μs for 253Rf and 254Rf were observed.
text: The lighter isotopes usually have shorter half-lives; half-lives of under 100 ms for 260Bh, 261Bh, 262Bh, and 262mBh were observed.