Question

difference between crystal radius and ionic radius

Answer 1

As it is mentioned crystal radius of Ti4+ in TiO2 which is 6 co-ordinated is 0.745 angstrom but its ionic radii is 0.605 angstrom.                                                                                                                              Crystal radius is calculated by ''The Nature of the Chemical Bond" L. Pauling. Published in 1961 by Ithaca: Cornell University Press''                                                                                                                            Ionic radii is calculated by '' L. H. Ahrens. Published in 1952 Geochim. Cosmochim. Acta, 2, Pages 155-169''