Lanthanides
Lanthanides
Lanthanides (pronunciation: lan-tha-nides) are a group of 15 chemical elements, with atomic numbers 57 through 71. They are part of the f-block elements in the Periodic Table. The term "lanthanides" is derived from the first element in the series, Lanthanum.
Etymology
The term "lanthanides" is derived from the Greek word "lanthanein", which means "to lie hidden". This is a reference to the obscurity of these elements when they were first discovered.
Elements in the Lanthanide Series
The lanthanide series includes the following elements:
- Lanthanum (La)
- Cerium (Ce)
- Praseodymium (Pr)
- Neodymium (Nd)
- Promethium (Pm)
- Samarium (Sm)
- Europium (Eu)
- Gadolinium (Gd)
- Terbium (Tb)
- Dysprosium (Dy)
- Holmium (Ho)
- Erbium (Er)
- Thulium (Tm)
- Ytterbium (Yb)
- Lutetium (Lu)
Properties
Lanthanides are known for their unique chemical and physical properties. They are typically soft, malleable, and have high melting and boiling points. They are also known for their magnetic properties and their ability to conduct electricity.
Uses
Lanthanides have a wide range of uses in various industries. They are used in the production of magnets, lasers, and superconductors. They are also used in the manufacturing of catalysts and in the nuclear industry.
Related Terms
- Actinides: Another series of f-block elements in the Periodic Table, which are often studied alongside the lanthanides.
- Rare Earth Elements: A term often used to refer to the lanthanides, due to their similar properties and occurrence in nature.
External links
- Medical encyclopedia article on Lanthanides
- Wikipedia's article - Lanthanides
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