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de transition","Occurence":"Synthétique"},{"Nom":"Dubnium","Symbole_chimique":"Db","Numero_atomique":105,"Nombre_de_neutrons":163,"Masse":"268","Periode":7,"Groupe":5,"Distribution_electron":"2,8,18,32,32,11,2","Etat":"Solide","Famille":"Métaux de transition","Occurence":"Synthétique"},{"Nom":"Seaborgium","Symbole_chimique":"Sg","Numero_atomique":106,"Nombre_de_neutrons":165,"Masse":"271","Periode":7,"Groupe":6,"Distribution_electron":"2,8,18,32,32,12,2","Etat":"Solide","Famille":"Métaux de transition","Occurence":"Synthétique"},{"Nom":"Bohrium","Symbole_chimique":"Bh","Numero_atomique":107,"Nombre_de_neutrons":165,"Masse":"272","Periode":7,"Groupe":7,"Distribution_electron":"2,8,18,32,32,13,2","Etat":"Solide","Famille":"Métaux de transition","Occurence":"Synthétique"},{"Nom":"Hassium","Symbole_chimique":"Hs","Numero_atomique":108,"Nombre_de_neutrons":162,"Masse":"270","Periode":7,"Groupe":8,"Distribution_electron":"2,8,18,32,32,14,2","Etat":"Solide","Famille":"Métaux de 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classés","Occurence":"Synthétique"},{"Nom":"Tennesse","Symbole_chimique":"Ts","Numero_atomique":117,"Nombre_de_neutrons":177,"Masse":"294","Periode":7,"Groupe":17,"Distribution_electron":"2,8,18,32,32,18,7","Etat":"Solide","Famille":"Non classés","Occurence":"Synthétique"},{"Nom":"Oganesson","Symbole_chimique":"Og","Numero_atomique":118,"Nombre_de_neutrons":176,"Masse":"294","Periode":7,"Groupe":18,"Distribution_electron":"2,8,18,32,32,18,8","Etat":"Solide","Famille":"Non classés","Occurence":"Synthétique"}]}