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Lanthanide contraction - Wikipedia, the free encyclopedia
Lanthanide contraction is a term used in chemistry to describe different but closely related concepts associated with smaller than expected ionic radii of the elements in the lanthanide series (atomi...
en.wikipedia.org/wiki/Lanthanide_contraction |
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The name given to an unusual phenomenon encountered in the rare-earth series of elements. The radii of the atoms of the members of this series.. ... Subscription Info Newsletter Site Demo Librarians Help/FAQs About Contact Us ... Search Results: Lanthanide contraction...
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This volume decrease occurs because of the so-called lanthanide contraction6, where the addition of electrons to the poorly shielding 4f orbitals leads to an increase in effective nuclear charge and, correspondingly, a decrease in ionic radii.
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Home / Definition of lanthanide contraction ... Related Terms & Definitions to Lanthanide Contraction ... Find More Information on Lanthanide Contraction...
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I cant understand lanthanide contraction....as we go along the period if the number of electrons increase in the f-subshell, then the shielding effect should be more pronounced..instead they say that the shielding effect is reduced and hence the nucleus can attract the outer shelll electrons more strongly and...
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A decrease in the radii of the elements following the lanthanides compared to what would be expected if there were no f-transition metals. Search the Dictionary © chemicool.com Tools | About | Forum | Contact | Privacy | Science network | Biology Search Search...
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Definition of lanthanide contraction with German, Dutch, French, Italian, and Spanish translations and search. Pronunciation sound files. ... English Dictionary - With Multi-Lingual Search ... Word of the Week...
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This recent article discusses a series of isostructural complexes across the lanthanides using a multidentate ligand. In these structures, the lanthanides are all eight-coordinate, bonded to all Copious structural data is presented that provides excellent experimental verification of the lanthanide contraction.
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The progressive structural change is due to the metal coordination number decreasing from nine for the large ions via eight to seven for the small ions, demonstrating clearly the effect of lanthanide contraction.
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The Lanthanide Contraction ... A result of this increase in effective nuclear charge is a reduction in the atomic radii, called the lanthanide contraction. This contraction nearly cancels the expected increase in size between the fifth- and sixth-period transition-metal elements.
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