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2. Ionic radius - Wikipedia

   en.wikipedia.org/wiki/Ionic_radius

   Ionic radius, r ion, is the radius of a monatomic ion in an ionic crystal structure. Although neither atoms nor ions have sharp boundaries, they are treated as if they were hard spheres with radii such that the sum of ionic radii of the cation and anion gives the distance between the ions in a crystal lattice .

3. Atomic radius - Wikipedia

   en.wikipedia.org/wiki/Atomic_radius

   Ionic radius: the nominal radius of the ions of an element in a specific ionization state, deduced from the spacing of atomic nuclei in crystalline salts that include that ion. In principle, the spacing between two adjacent oppositely charged ions (the length of the ionic bond between them) should equal the sum of their ionic radii.

4. Cation-anion radius ratio - Wikipedia

   en.wikipedia.org/wiki/Cation-anion_radius_ratio

   In condensed matter physics and inorganic chemistry, the cation-anion radius ratio can be used to predict the crystal structure of an ionic compound based on the relative size of its atoms. It is defined as the ratio of the ionic radius of the positively charged cation to the ionic radius of the negatively charged anion in a cation-anion compound.

5. Atomic radii of the elements (data page) - Wikipedia

   en.wikipedia.org/wiki/Atomic_radii_of_the...

   The Bohr radius is consequently known as the "atomic unit of length". It is often denoted by a 0 and is approximately 53 pm. Hence, the values of atomic radii given here in picometers can be converted to atomic units by dividing by 53, to the level of accuracy of the data given in this table. Atomic radii up to zinc (30)

6. Kapustinskii equation - Wikipedia

   en.wikipedia.org/wiki/Kapustinskii_equation

   Kapustinskii replaced r 0, the measured distance between ions, with the sum of the corresponding ionic radii. In addition, the Born exponent, n, was assumed to have a mean value of 9. Finally, Kapustinskii noted that the Madelung constant, M, was approximately 0.88 times the number of ions in the empirical formula. [2]

7. Pauling's rules - Wikipedia

   en.wikipedia.org/wiki/Pauling's_rules

   For typical ionic solids, the cations are smaller than the anions, and each cation is surrounded by coordinated anions which form a polyhedron.The sum of the ionic radii determines the cation-anion distance, while the cation-anion radius ratio + / (or /) determines the coordination number (C.N.) of the cation, as well as the shape of the coordinated polyhedron of anions.

8. HuffPost Data

   projects.huffingtonpost.com

   Interactive maps, databases and real-time graphics from The Huffington Post

9. Category:Atomic radius - Wikipedia

   en.wikipedia.org/wiki/Category:Atomic_radius

   Pages in category "Atomic radius" The following 14 pages are in this category, out of 14 total. This list may not reflect recent changes. A. Actinide contraction;