Assertion: hafnium's isotope | /r/HasAspect | shorter half-lives
Facets:
value: usually
type: TEMPORAL
value: for 254rf
type: TEMPORAL
value: out of isotopes
type: OTHER
value: for 253rf
type: TEMPORAL
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 lightest isotopes, which usually have shorter half-lives, were synthesized by direct fusion between two lighter nuclei and as decay products.