![]() Atomic Radius |
Atomic radius is taken as the covalent radius for non-metallic elements and as the metallic radius for metals. Covalent radius is one-half the distance between the nuclei of two identical atoms that are singly bonded to one another. Covalent radii for elements whose atoms do not bond to one another can be estimated by combining radii of those that do with the distances between unlike atoms in various molecules. Metallic radius is one-half the closest internuclear distance in a metallic crystal. Values of atomic radii are reported in picometers (1 pm = 1 E-12 m). Atomic radii were taken from the 15th edition of LANGE'S HANDBOOK OF CHEMISTRY, J.A. Dean, Ed., McGraw-Hill, 1999. Data from LANGE'S HANDBOOK OF CHEMISTRY was collected online at: http://www.knovel.com/knovel2/Toc.jsp?SpaceID=10093&BookID=47 (accessed July, 2002) |