Assertion: radon's isotope | /r/HasProperty | radioactive
Facets:
value: chemically
type: MANNER
Source sentences:
text: It is also the only gas that contains radioactive isotopes and is considered a health hazard.
text: These short-lived isotopes are not gases but are chemically active solids.
text: It is also the only gas under normal conditions that only has radioactive isotopes, and is considered a health hazard due to its radioactivity.
text: It is also the only gas under normal conditions that only has radioactive isotopes, and is considered a health hazard due to its radioactivity.
text: These short-lived isotopes are not gases but are chemically active solids.
text: These short-lived isotopes are not gases but are chemically active solids.