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Table 12.3 Ionic Radii for Several Cations and Anions for a Coordination Number of 6 Cation Ionic Radius (nm) Аnion Ionic Radius (nm) Al3+ 0.053 Br 0.196 Ва2+ 0.136 Cl 0.181 Ca2+ 0.100 F 0.133 Cs 0.170 0.220 Fe2* 0.077 02- 0.140 Fe3+ 0.069 S2- 0.184 Kt 0.138 Mg2 0.072 Mn2+ 0.067 Na* 0.102 Ni2+ 0.069 Si4+ 0.040 Ti4+ 0.061

Table 12.3 Ionic Radii for Several Cations and Anions for a Coordination Number of 6 Cation Ionic Radius (nm) Аnion Ionic Radius (nm) Al3+ 0.053 Br 0.196 Ва2+ 0.136 Cl 0.181 Ca2+ 0.100 F 0.133 Cs 0.170 0.220 Fe2* 0.077 02- 0.140 Fe3+ 0.069 S2- 0.184 Kt 0.138 Mg2 0.072 Mn2+ 0.067 Na* 0.102 Ni2+ 0.069 Si4+ 0.040 Ti4+ 0.061

Chemistry & Chemical Reactivity
Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter21: The Chemistry Of The Main Group Elements
Section: Chapter Questions
Problem 124SCQ
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Iron titanate, FeTiO3, forms in the ilmenite crystal structure that consists of an HCP arrangement of O2- ions.

(a) Which type of interstitial site will the Fe2+ ions occupy?

(b) Which type of interstitial site will the Ti4+ ions occupy?

(c) What fraction of the total tetrahedral sites will be occupied? (In decimal form to two places to the right of the decimal)

(d) What fraction of the total octahedral sites will be occupied? (In decimal form to two places to the right of the decimal)

Table 12.3 Ionic Radii for Several Cations and Anions for a Coordination Number of 6 Cation Ionic Radius (nm) Аnion Ionic Radius (nm) Al3+ 0.053 Br 0.196 Ва2+ 0.136 Cl 0.181 Ca2+ 0.100 F 0.133 Cs 0.170 0.220 Fe2* 0.077 02- 0.140 Fe3+ 0.069 S2- 0.184 Kt 0.138 Mg2 0.072 Mn2+ 0.067 Na* 0.102 Ni2+ 0.069 Si4+ 0.040 Ti4+ 0.061
Transcribed Image Text:Table 12.3 Ionic Radii for Several Cations and Anions for a Coordination Number of 6 Cation Ionic Radius (nm) Аnion Ionic Radius (nm) Al3+ 0.053 Br 0.196 Ва2+ 0.136 Cl 0.181 Ca2+ 0.100 F 0.133 Cs 0.170 0.220 Fe2* 0.077 02- 0.140 Fe3+ 0.069 S2- 0.184 Kt 0.138 Mg2 0.072 Mn2+ 0.067 Na* 0.102 Ni2+ 0.069 Si4+ 0.040 Ti4+ 0.061
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