In an earlier article, Bohr radius of hydrogen was shown to be the sum of two Golden sections pertaining to the electron and proton. This led to discovering thaHeyrovska, RajiSocial Science Electronic PublishingHeyrovska, R. Atomic and Ionic Radii of Elements and Bohr Radii from Ionization ...
A new method of determination of the ionic radii of elements in unusual valence states is suggested: from the empirical dependence of the electron density... LT Bugaenko,SM Ryabykh,AL Bugaenko - 《Moscow University Chemistry Bulletin》 被引量: 20发表: 2008年 Atomic and Ionic Radii of Ele...
Atomic and ionic radii are presented for the elements E104–E120 and E156–E172. It is shown that a number of effects correlated with the large relativistic contraction of orbitals with low angular momentum leads to smaller atoms for higher atomic numbers. It is expected that Cs is the larges...
the parent atom. For example, a sulfur atom ([Ne]3s23p4) has a covalent radius of 104 pm, whereas the ionic radius of the sulfide anion ([Ne]3s23p6) is 170 pm. For consecutive elements proceeding down any group, anions have larger principal quantum numbers and, thus, larger radii. ...
Atomic and ionic radii are presented for the elements E104–E120 and E156–E172. It is shown that a number of effects correlated with the large relativisti... Fricke,B. - 《Journal of Chemical Physics》 被引量: 50发表: 1972年 Ionic radii of heavy actinide(III) cations Experimentally dete...
If' sizes' are taken as either metallic or covalent radii, which are determined by halving bond lengths in pure elements, atoms generally decrease in size as one moves across a period of the Periodic Table, and increase in size as one descends a group. If one considers ions and if full ...
离子半径andionicradii离子半径IonicRadii原子半径和离子半径 系统标签: atomicionic半径原子离子period By Tessa The atomic radius of an element is basically the size of the atom. We can determine the atomic radius by finding half the length between the nucleus’ of two atoms of the same elements. ...
Unusual complex chemistry of rare-Earth elements: large ionic radii-small coordination numbers. Because of their large ionic radii and relatively low oxidation states rare-earth elements generally form complexes which have high coordination numbers an... K Dehnicke,A Greiner - 《Angewandte Chemie》...
of its outermost electrons and is inversely proportional to the effective nuclear charge experienced by ions. It is calculated from the internuclear distance between a cation and a neighboring anion in a lattice. Ionic radii are typically reported in picometers (pm, 1 × 10−12m) or in the...
Image showing periodicity of the chemical elements for ionic radii (Shannon) for octahedral M(-II) ion in a 3D periodic table column style. Notes The "effective ionic radii" quoted here assume that the ionic radius of F-is 133 pm and that of O2-is 140 pm. ...