LANTHANOIDS

LANTHANOIDS Basic information
Product Name:LANTHANOIDS
Synonyms:LANTHANOIDS
CAS:
MF:
MW:0
EINECS:
Product Categories:
Mol File:Mol File
LANTHANOIDS Structure
LANTHANOIDS Chemical Properties
Safety Information
MSDS Information
LANTHANOIDS Usage And Synthesis
DefinitionA group of elements whose electronic configurations display back filling of the 4f-level. There is a maximum of 14 electrons in an f-orbital. The element lanthanum itself has no f-electrons (La [Xe]5d16s2) and is thus strictly not a lanthanoid, but it is included by convention, thus giving a closely related series of 15 elements. Excluding lanthanum, the elements all have 4fx6s2 configurations but gadolinium and lutecium have an additional 5d1 electron.
The characteristic oxidation state is M3+ and the great similarity in the size of the ions leads to a very close similarity of chemical properties and hence to great difficulties of separation using conventional methods. Chromatographic and solvent solventextraction methods have been specially developed for the lanthanoids.
Industrial usesThe lanthanoid series consists of 14 elements (cerium to lutetium) and they are also called f-block metals, as the valence shell of lanthanoids contains 4f orbitals. Lanthanoids are named after the element lanthanum (La), which itself is a d-block metal. Nevertheless, because of its very similar chemical behaviour, lanthanum is often also classified as a lanthanoid. The term rare earth metals describes the lanthanoid series together with lanthanum (La), scandium (Sc) and yttrium (Y).
Mostly, lanthanoids are used in the production of batteries, lasers and other technological devices. Some lanthanoids salts, such as the salts of lanthanum, cerium and gadolinium (highlighted in Figure 9.1), are increasingly used in a clinical setting, for example, as a phosphate binder in the treatment of renal osteodystrophy or as MRI (magnetic resonance imaging) contrast agents (CAs).
LANTHANOIDS Preparation Products And Raw materials
Tag:LANTHANOIDS Related Product Information