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Atomic radius oxygen family elements

Neutral extracting agents possessing oxygen-donor atoms (hard bases) in their structure easily coordinate trivalent lanthanide and actinide cations, but do not discriminate between the two families of elements, because the ion-dipole (or ion-induced dipole type) interactions mostly rely on the charge densities of the electron donor and acceptor atoms. As a result, the similar cation radii of some An(III) and Ln(III) and the constriction of the cation radius along the two series of /elements make An(III)/Ln(III) separation essentially impossible from nitric acid media. They can be separated, however, if soft-donor anions, such as thiocyanates, SCN-, are introduced in the feed (34, 35, 39, 77). [Pg.128]


See other pages where Atomic radius oxygen family elements is mentioned: [Pg.94]    [Pg.94]   
See also in sourсe #XX -- [ Pg.444 ]

See also in sourсe #XX -- [ Pg.444 ]

See also in sourсe #XX -- [ Pg.445 ]




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