1 isotope stable ou quasi-stable
140.91
59
Praséodyme
Lanthanides
158.93
65
Terbium
Lanthanides
164.93
67
Holmium
Lanthanides
168.93
69
Thulium
Lanthanides
2 isotopes stable ou quasi-stable
138.96
57
Lanthane
Lanthanides
151.97
63
Europium
Lanthanides
3 ou + isotopes stable ou quasi-stable
140.12
58
Cérium
Lanthanides
144.24
60
Néodyme
Lanthanides
150.36
62
Samarium
Lanthanides
157.25
64
Gadolinum
Lanthanides
162.5
66
Dysprosium
Lanthanides
167.26
68
Erbium
Lanthanides
173.04
70
Ytterbium
Lanthanides
radioactif
145
61
Prométhium
Lanthanides