Lanthanides in a sentence

Greenwood and Earnshaw, p. 1103 Bastnäsite is usually lacking in thorium and the heavy lanthanides, and the purification of the light lanthanides from it is less involved.

The lanthanides and actinides, in the metallic state, can exist as either divalent (such as europium and ytterbium ) or trivalent (most other lanthanides) metals.

The lanthanides and the remaining actinides are then separated from the aqueous residue ( raffinate ) by a diamide-based extraction to give, after stripping, a mixture of trivalent actinides and lanthanides.

All of the lanthanides form LnC 2 and Ln 2 C 3 which both contain C 2 units.

Because of its closed-shell electron configuration, its density and melting and boiling points differ from those of the other lanthanides.

Biological effects Due to their sparse distribution in the earth's crust and low aqueous solubility, the lanthanides have a low availability in the biosphere, and are not known to naturally form part of any biological molecules.

Borides All of the lanthanides form a number of borides.

Both elements are lanthanides and have very similar physical and chemical properties.

By using different lanthanides MeCAT multiplexing can be used for pharmacokinetics of proteins and peptides or the analysis of the differential expression of proteins ( proteomics ) e.g. in biological fluids.

Compared to the lanthanides, which (except for promethium ) are found in nature in appreciable quantities, most actinides are rare.

Contrary to cyclopentadienides of most other lanthanides, in Sm(C 5 H 5 ) 3 some C 5 H 5 rings bridge each other by forming ring vertexes η 1 or edges η 2 toward another neighboring samarium atom, thereby creating polymeric chains.

Coordination numbers are normally between two and nine, but large numbers of ligands are not uncommon for the lanthanides and actinides.

Despite their abundance, even the technical term "lanthanides" could be interpreted to reflect a sense of elusiveness on the part of these elements, as it comes from the Greek λανθανειν (lanthanein), "to lie hidden".

Due to high cost to extract the other lanthanides, a mischmetal with more than 50% of lanthanum is used instead of pure lanthanum.

Effect of 4f orbitals Going across the lanthanides in the periodic table, the 4f orbitals are usually being filled.

Einsteinium(III) was also incorporated into beta-diketone chelate complexes, since analogous complexes with lanthanides previously showed strongest UV-excited luminescence among metallorganic compounds.

Europium has the second lowest melting point and the lowest density of all lanthanides.

For the extraction from the ore and the isolation of individual lanthanides, several methods have been developed.

Haire, p. 1583 The yields are much higher for reactor irradiation, but there, the product is a mixture of various actinide isotopes, as well as lanthanides produced in the nuclear fission decays.

Hexaborides, LnB 6 have been reported for all of the lanthanides.