Actions for Shifted homologous relationships between the transplutonium and early rare-earth metals [electronic resource].

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Shifted homologous relationships between the transplutonium and early rare-earth metals [electronic resource].

Published
Los Alamos, N.M. : Los Alamos National Laboratory, 1984.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
Pages: 14 : digital, PDF file
Additional Creators
Los Alamos National Laboratory and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
The physico-chemical properties of the late actinide metals americium through einsteinium are compared with their rare-earth counterparts. Localization of the 5f electrons beginning at americium signals the appearance of true rare-earth-like properties, but the homologous relationship is shifted to place americium below praseodymium, einsteinium then below europium. The comparison of crystal structure, phase transitions, vapor pressures and heats of vaporization reveals remarkable similarities, especially for Sm-Cf and Eu-Es, where the stability of the divalent metal becomes established and divalent chemistry then follows. There is of course a major perturbation at the half-filled shell at curium, and it may be argued that americium is the anomaly in the so-called second rare-earth series. However, the response of americium, berkelium and californium under pressure reveals the true perturbation to be a thermodynamic one, occurring at curium.
Report Numbers
E 1.99:la-ur-85-242
E 1.99: conf-841229-2
conf-841229-2
la-ur-85-242
Subject(s)
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Note
Published through SciTech Connect.
01/01/1984.
"la-ur-85-242"
" conf-841229-2"
"DE85006712"
International symposium on americium and curium science and technology, Honolulu, HI, USA, 16 Dec 1984.
Ward, J.W.
Funding Information
W-7405-ENG-36
View MARC record | catkey: 14760558