![]() Ionic Radius |
Ionic radius is the distance from the center of an ion to the minimum in electron density between that ion and one of its nearest neighbors. Electron density is determined from x-ray crystallographic studies. The radii reported here are for ions that have six nearest neighbors (6-coordinate ions), except for Neodymium(II), Samarium(II), Radium(II), and Americium(II), which are 8-coordinate. If the radius of an ion differs between the high and low spin states, the low spin ionic radius is reported. Radii are given 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) |