noun🔗ShareRadónThe chemical element (symbol Rn, formerly Ro) with atomic number 86. It is an odorless, colorless, chemically inert but radioactive noble gas."Many homes are tested for radon because this invisible, radioactive gas can be harmful to breathe. "Muchas casas se someten a pruebas de radón porque este gas invisible y radiactivo puede ser perjudicial para respirar.elementchemistrysubstancescienceChat with AIVocabulary GamePractice Reading
