6. Periode
Caesium
55
Barium
56
Lanthan
57
Cer
58
Praseodym
59
Neodym
60
Promethium
61
Samarium
62
Europium
63
Gadolinium
64
Terbium
65
Dysprosium
66
Holmium
67
Erbium
68
Thulium
69
Ytterbium
70
Lutetium
71
Hafnium
72
Tantal
73
Wolfram
74
Rhenium
75
Osmium
76
Iridium
77
Platin
78
Gold
79
Quecksilber
80
Thallium
81
Blei
82
Bismut
83
Polonium
84
Astat
85
Radon
86
Periodensystem
Sprache
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