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lanthanide
(redirected from lanthanoid)

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lanthanide

Any of the series of 15 consecutive chemical elements in the periodic table from lanthanum to lutetium (atomic numbers 57–71). With scandium and yttrium, they make up the rare earth metals. Their atoms have similar configurations and similar physical and chemical behaviour; the most common valences are 3 and 4.
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They’re generally clustered in a separate grouping at the bottom of the table, are known collectively as the lanthanoids, and these are their names, in order of atomic number (57-70): lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, and ytterbium.
Why all the fuss over rare earths? by Doug Hornig / Stockhouse
Changes in this edition include updates to the chapters on organometallic catalysis in synthesis and production, bioorganometallic chemistry, and new developments in the field; there is also a new chapter on organometallic chemistry of the lanthanoids and actinoids.
Organometallics, 3d rev.ed by SciTech Book News
 
 
 
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