radon
ra-don
noun
A radioactive, colourless, odourless noble gas, symbol Rn, found naturally.
"Radon gas can accumulate in homes."
Thesaurus
Synonyms: Rn, atomic number 86
ra-don
A radioactive, colourless, odourless noble gas, symbol Rn, found naturally.
"Radon gas can accumulate in homes."
Synonyms: Rn, atomic number 86