🌐EnglishEnglishBahasa IndonesiaEspañolFrançaisTiếng ViệtTürkçeالعربيةفارسی한국어中文日本語EntityQ2410022· pop 19· linked from 129 articlestrace radioisotopeelement that is found in small quantities because it undergoes radioactive decayAvailable in 19 languagesEspañolFrançais中文العربيةAragoneseAsturianBahasa IndonesiaBanglaBretonCatalanConnectionsdecay chainEntityisotope of berylliumEntityCategoriesRadioactivity