ABSTRACT
In the periodic table, rare earth elements (REEs) represent a group of 15 elements, specifically the lanthanides (Table 7.1). They are often referred to as REEs, share common physiochemical properties, and, therefore, often occur together as elemental constituents of their host minerals. Yttrium and Lanthanide (REE) Symbols, Atomic Weight, and Ionic Radius for Coordination Number 6
|
Symbol |
Atomic Number (g mol−1) |
Ionic Radius (Å) |
|
|---|---|---|---|
|
Yttrium |
Y |
88.9 |
0.9 |
|
Lanthanum |
La |
138.9 |
1.03 |
|
Cerium |
Ce |
140.1 |
1.01 |
|
Praseodymium |
Pr |
140.9 |
0.99 |
|
Neodynium |
Nd |
144.2 |
0.98 |
|
Promethium |
Pr |
||
|
Smarium |
Sm |
150.4 |
0.96 |
|
Europium |
Eu |
152 |
0.95 |
|
Gadolimium |
Ga |
157.2 |
0.94 |
|
Terbium |
Tb |
158.9 |
0.92 |
|
Dysprosium |
Dy |
162.5 |
0.91 |
|
Holmium |
Ho |
164.9 |
0.9 |
|
Erbium |
Er |
167.3 |
0.89 |
|
Terbium |
Tb |
168.9 |
0.88 |
|
Ytterbium |
Yb |
173 |
0.87 |
|
Lutetium |
Lu |
175 |
0.86 |
