Describes electron configurations of lanthanides and actinides and uses of lanthanides and actinides. The lanthanides and actinides together are sometimes called the inner transition elements.
Describes electron configurations of lanthanides and actinides and uses of lanthanides and actinides. Lanthanides have been widely used as alloys to impart strength and hardness to metals. The main lanthanide used for this purpose is cerium, mixed with small amounts of lanthanum, neodymium, and praseodymium. These metals are also widely used in the petroleum industry for refining of crude oil into gasoline products.
The behaviour of lanthanide dithionates and their triphenylphosphine oxide .
The behaviour of lanthanide dithionates and their triphenylphosphine oxide complexes under electrospray mass spectrometry conditions has been investigated. In reduced halides, however, they behave as unlike twins: praseodymium exhibits d-like behaviour already under ambient conditions with the formation of (interstitially stabilized) clusters or, alternatively, semi-metals or even metals. Reactions of lanthanide chlorides LnCl3 with NaH2PO2 in aqueous solution afforded a series of complexes (Ln La–Tb, n 1; Ce–Nd, Dy–Lu; n 0) with members falling into at least four separate structural types.
Recent progress on basic structure and properties of the lanthanide halides is reported here, including thermomechanical and thermogravimetric analyses, hygroscopicity, yield strength, and fracture toughness. Observations including reversible hydrate formation under atmospheric pressure, loss of stoichiometry at high temperature, anisotropic thermal expansion, reactivity towards common crucible materials, and crack initiation and propagation under applied loads are reported. The fundamental physical and chemical properties of this system introduce challenges for material processing, scale-up,.
Lanthanides and actinides hydration and hydrolysis (. . 128. Solution chemistry of actinides and lanthanides (. In particular this book considers the comparisons of the chemistry of the lanthanide and actinide elements. The lanthanide and actinide elements present a multitude of challenging physical and chemical problems resulting from the involvement of open F-shell electronic configurations. interrelationships and comparisons of the halides; an examination of the relative hydration and hydrolysis behaviors of the lanthanides and actinides.
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In presentations of the periodic table, the lanthanides and the actinides are customarily shown as two additional . The 1985 International Union of Pure and Applied Chemistry Red Book (p. 45) recommends that "lanthanoid" is used rather than "lanthanide".
In presentations of the periodic table, the lanthanides and the actinides are customarily shown as two additional rows below the main body of the table, with placeholders or else a selected single element of each series (either lanthanum and actinium, or lutetium and lawrencium) shown in a single cell of the main table, between barium and hafnium, and radium and rutherfordium, respectively. The ending -ide normally indicates a negative ion. However, owing to wide current use, lanthanide is still allowed.
Actinides consist of elements that follow actinium and involve the filling of 5f subshell. Electronic Configuration.
Synthesis of Lanthanide and Actinide Compounds. Part of the Topics in f-Element Chemistry book series (TFEC, volume 2). Abstract
Synthesis of Lanthanide and Actinide Compounds. Synthesis of Lanthanide and Actinide Compounds pp 175-185 Cite as. Action of Alkali Metals on Lanthanide(III) Halides: An Alternative to the Conproportionation Route to Reduced Lanthanide Halides. Authors and affiliations. Abstract. Long before the first dihalides, SmCl2 and EuCl2, were discovered through hydrogen reduction of the trichlorides at the turn of the century, it had been F. Wöhler who, back in 1828, used potassium as a reducing agent for yttrium trichloride, YCI3.
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