Back Groep (periodieke tabel) Afrikaans Gruppe des Periodensystems ALS Grupo d'a tabla periodica AN مجموعة (جدول دوري) Arabic Grupu de la tabla periódica AST Dövri cədvəl qrupu Azerbaijani Watek (tabél périodik) BAN Група перыядычнай сістэмы Byelorussian Група на периодичната система Bulgarian শ্রেণি (পর্যায় সারণি) Bengali/Bangla
&sq=engine&lang=simple&file=File:Question_book-4.svg){kind=small} | This article does not have any sources. (February 2024) |
A group is any column on the periodic table. Elements in the same group usually have similar properties, because they have the same number of electrons in the outermost electron shell. There are eight main groups of elements, numbered 1, 2, and 13-18. The other ten groups are transition metals:
- Group 1: the alkali metals (lithium family) *not including hydrogen
- Group 2: the alkaline earth metals (beryllium family)
- Groups 3-12: the transition metals
- Group 13: the triels (boron family)
- Group 14: the tetrels (carbon family)
- Group 15: the pnictogens (nitrogen family)
- Group 16: the chalcogens (oxygen family)
- Group 17: the halogens (fluorine family)
- Group 18: the noble gases (helium/neon family)