Lanthanide
Lanthanide
Lanthanide (pronunciation: /ˈlanTHəˌnīd/) is a term used in the field of Chemistry to refer to a series of 15 metallic elements, from lanthanum through lutetium on the periodic table. These elements, with atomic numbers 57 through 71, are also known as the "rare earth elements".
Etymology
The term "lanthanide" is derived from the first element in the series, lanthanum. The word lanthanum itself comes from the Greek "lanthanein", which means "to lie hidden". This is a reference to the difficulty early chemists had in isolating these elements.
Related Terms
- Lanthanum: The first element in the lanthanide series.
- Cerium: The second element in the lanthanide series.
- Praseodymium: The third element in the lanthanide series.
- Neodymium: The fourth element in the lanthanide series.
- Promethium: The fifth element in the lanthanide series.
- Samarium: The sixth element in the lanthanide series.
- Europium: The seventh element in the lanthanide series.
- Gadolinium: The eighth element in the lanthanide series.
- Terbium: The ninth element in the lanthanide series.
- Dysprosium: The tenth element in the lanthanide series.
- Holmium: The eleventh element in the lanthanide series.
- Erbium: The twelfth element in the lanthanide series.
- Thulium: The thirteenth element in the lanthanide series.
- Ytterbium: The fourteenth element in the lanthanide series.
- Lutetium: The fifteenth and final element in the lanthanide series.
External links
- Medical encyclopedia article on Lanthanide
- Wikipedia's article - Lanthanide
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