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Using Table 12.2, Table 12.3, Table 12. 4 predict the crystal structure for NiO. (Write out the name of the structure as given in Table 12. 4)

Using Table 12.2, Table 12.3, Table 12. 4 predict the crystal structure for NiO. (Write out the name of the structure as given in Table 12. 4)

Physical Chemistry
Physical Chemistry
2nd Edition
ISBN:9781133958437
Author:Ball, David W. (david Warren), BAER, Tomas
Publisher:Ball, David W. (david Warren), BAER, Tomas
Chapter21: The Solid State: Crystals
Section: Chapter Questions
Problem 21.47E
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Using Table 12.2, Table 12.3, Table 12. 4 predict the crystal structure for NiO. (Write out the name of the structure as given in Table 12. 4) 

Coordination Number Cation-Anion Radius Ratio Coordination Geometry 2 <0.155 3 0.155-0.225 0.225-0.414 0.414-0.732 0.732-1.0 Using Table 12.2, Table 12.3, and Table 12.4 predict the crystal structure for NiO. (Write out the name of the structure as given in Table 12.4.) Click if you would like to Show Work for this question: Open Show Work
Transcribed Image Text:Coordination Number Cation-Anion Radius Ratio Coordination Geometry 2 <0.155 3 0.155-0.225 0.225-0.414 0.414-0.732 0.732-1.0 Using Table 12.2, Table 12.3, and Table 12.4 predict the crystal structure for NiO. (Write out the name of the structure as given in Table 12.4.) Click if you would like to Show Work for this question: Open Show Work
Table 12.4 Summary of Some Common Ceramic Crystal Structures Coordination Number Structure Name Structure Type Anion Packing Cation Anion Examples Rock salt (sodium chloride) AX FCC 6 6 NaCI, Mgo, Feo Cesium chloride AX Simple cubic 8 8 CsCI Zinc blende (sphalerite) AX FCC 4 4 ZnS, Sic Fluorite AX2 Simple cubic 8 4 CaF2, UO2, ThO2 Perovskite ABX3 FCC 12 (A) 6 BaTiO3, SrZrO3, SrSno3 6 (B) Spinel AB2X4 FCC 4 (A) MgAl204, FeAl204 Table 12.3 lonic Radii for Several Cations and Anions for a Coordination Number of 6 Cation lonic Radius (nm) Anion lonic Radius (nm) A13+ 0.053 Br 0.196 Ba2+ 0.136 CI 0.181 Ca2+ 0.100 F 0.133 Cs+ 0.170 0.220 Fe2+ 02- 0.077 0.140 Fe3+ 0.069 s2 0.184 K+ 0.138 Mg2+ 0.072 Mn2+ 0.067 Na* 0.102 Nj2+ 0.069 0.040 0.061
Transcribed Image Text:Table 12.4 Summary of Some Common Ceramic Crystal Structures Coordination Number Structure Name Structure Type Anion Packing Cation Anion Examples Rock salt (sodium chloride) AX FCC 6 6 NaCI, Mgo, Feo Cesium chloride AX Simple cubic 8 8 CsCI Zinc blende (sphalerite) AX FCC 4 4 ZnS, Sic Fluorite AX2 Simple cubic 8 4 CaF2, UO2, ThO2 Perovskite ABX3 FCC 12 (A) 6 BaTiO3, SrZrO3, SrSno3 6 (B) Spinel AB2X4 FCC 4 (A) MgAl204, FeAl204 Table 12.3 lonic Radii for Several Cations and Anions for a Coordination Number of 6 Cation lonic Radius (nm) Anion lonic Radius (nm) A13+ 0.053 Br 0.196 Ba2+ 0.136 CI 0.181 Ca2+ 0.100 F 0.133 Cs+ 0.170 0.220 Fe2+ 02- 0.077 0.140 Fe3+ 0.069 s2 0.184 K+ 0.138 Mg2+ 0.072 Mn2+ 0.067 Na* 0.102 Nj2+ 0.069 0.040 0.061
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