Assertion: protactinium's life | /r/HasProperty | less than thirty days
Facets:
Source sentences:
text: All of the remaining thorium isotopes have half-lives that are less than thirty days and the majority of these have half-lives that are less than ten minutes.
text: The half-life of Pa is about 30 days, and if it catches a neutron, it becomes U-234, which is not a fissile material.
text: All of the remaining radioactive isotopes have half-lives that are less than thirty days and the majority of these have half-lives that are less than ten minutes.