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Grex (systema periodicum)
In chemia, grex, familia quoque, est columna verticalis in systemate periodico elementorum chemicalium. Nomen est derivatum de facto illo elementa communicant communia similia membra.
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Groep (periodieke tabel) AF Gruppe des Periodensystems ALS Grupo d'a tabla periodica AN مجموعة (جدول دوري) Arabic Grupu de la tabla periódica AST Dövri cədvəl qrupu AZ Watek (tabél périodik) BAN Група перыядычнай сістэмы BE Група на периодичната система Bulgarian শ্রেণি (পর্যায় সারণি) Bengali/Bangla
