01531nas a2200181   4500008004100000022001400041245004200055210004200097260007300139300001200212490000800224520096000232653001601192653001601208653002401224100002701248856007401275       2009                        eng d  a0022-286000aAtomic sizes from atomic interactions0 aAtomic sizes from atomic interactions  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcJUL  a162-1660 v9303 a<p>We obtain an atomic size, r(nZ)(c), in the presence of an interaction (represented by an electron-hole pair, e(-)h(+) as in vacuum polarization techniques) as a sum of contribution, r(nv), from the interaction of n(val) valence sand p-electrons and a contribution r(RG) from inner filled shell electrons with rare-gas configuration. The method is applicable to all elements for a given electron configuration that is usually available simply from the position of the elements in the periodic table. The sizes thus obtained are close to other ``core sizes'' obtained in the literature. The transition metal elements are treated as group II elements. This method gives sizes for the actinide and trans-actinide elements without requiring relativistic corrections. The importance of these sizes in interpreting interatomic distances in terms of electronic configuration is illustrated for actinide elements. (C) 2009 Elsevier B.V. All rights reserved.</p>10aAtomic size10aIonic radii10aVacuum polarization1 aGanguly, Parthasarathy  uhttps://library.ncl.res.in/content/atomic-sizes-atomic-interactions-0