
Lanthanides
The lanthanides (atomic numbers 57-71, from lanthanum to lutetium) are the upper of the two long rows pulled out below the main table. They are also known as the rare-earth elements, although most are not particularly rare. They are essential for permanent magnets, lasers, phosphors and many high-tech alloys.
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Ce
Cerium
58
140.116
Dy
Dysprosium
66
162.5
Er
Erbium
68
167.259
Eu
Europium
63
151.964
Gd
Gadolinium
64
157.253
Ho
Holmium
67
164.93
La
Lanthanum
57
138.905
Lu
Lutetium
71
174.967
Nd
Neodymium
60
144.242
Pm
Promethium
61
145
Pr
Praseodymium
59
140.908
Sm
Samarium
62
150.362
Tb
Terbium
65
158.925
Tm
Thulium
69
168.934
Yb
Ytterbium
70
173.045