50

138.96
57
Lanthane
Lanthanides
140.12
58
Cérium
Lanthanides
140.91
59
Praséodyme
Lanthanides

60

144.24
60
Néodyme
Lanthanides
145
61
Prométhium
Lanthanides
150.36
62
Samarium
Lanthanides
151.97
63
Europium
Lanthanides
157.25
64
Gadolinum
Lanthanides
158.93
65
Terbium
Lanthanides
162.5
66
Dysprosium
Lanthanides
164.93
67
Holmium
Lanthanides
167.26
68
Erbium
Lanthanides
168.93
69
Thulium
Lanthanides

70

173.04
70
Ytterbium
Lanthanides