Assertion: radon | /r/CapableOf | exist as noble gas
Facets:
value: with the symbol rn
type: OTHER
value: on atomic number
type: LOCATION
value: on the periodic table
type: LOCATION
Source sentences:
text: Radon is a dense, radioactive chemical element that exists mainly as a noble gas with the symbol Rn on the periodic table and atomic number 86.