Assertion: lr's isotope | /r/HasProperty | synthesized in the laboratory
Facets:
value: by fusing two atoms
type: MANNER
Source sentences:
text: Several radioactive isotopes have been synthesized in the laboratory, either by fusing two atoms or by observing the decay of heavier elements.
text: Several radioactive isotopes have been synthesized in the laboratory, either by fusing two atoms or by observing the decay of heavier elements.