🌐EnglishEnglishBahasa IndonesiaDeutschEspañolFrançaisItalianoPolskiTiếng ViệtTürkçeРусскийفارسی한국어中文日本語EntityQ9236557· pop 29Category:Periods (periodic table)Also known as Category:Chemical elements by periodic table rowWikimedia categoryAvailable in 28 languagesEspañolFrançaisDeutsch中文日本語РусскийItalianoBahasa IndonesiaBhojpuri