Assertion: hydrogen's isotope | /r/HasProperty | given name
Facets:
value: during the early study of radioactivity
type: TEMPORAL
value: traditionally
type: OTHER
Source sentences:
text: (During the early study of radioactivity, some other heavy radioactive isotopes were given names, but such names are rarely used today.)
text: Isotopes and new elements were traditionally given the name that their discoverer decided.
text: (During the early study of radioactivity, some other heavy radioactive isotopes were given names, but such names are rarely used today.)