Assertion: actinium's isotope | /r/HasProperty | prepared
Facets:
value: by radiating thorium-230
type: MANNER
Source sentences:
text: The 231 isotope can be prepared by radiating thorium-230 with slow neutrons, converting it to the beta-decaying thorium-231, or by irradiating thorium-232 with fast neutrons, generating thorium-231 and 2 neutrons.