1. Cobalt oxide (Co²* and O²) forms a crystalline ceramic structure. Oxygen has an ionic radius of 0.140 nm and cobalt has an ionic radius of 0.072 nm. a) Calculate the radius ratio, rc/ra. b) Based on the radius ratio and ionic charge: Circle the stoichiometry: AX • Circle the crystal structure: AX2 A2X ABX3 Zinc Blende Cesium Chloride Sodium Chloride Perovskite Fluorite • Justify your answers for the above two questions using one or two sentences. Calculate the density of CoO in units of g/cm³.
1. Cobalt oxide (Co²* and O²) forms a crystalline ceramic structure. Oxygen has an ionic radius of 0.140 nm and cobalt has an ionic radius of 0.072 nm. a) Calculate the radius ratio, rc/ra. b) Based on the radius ratio and ionic charge: Circle the stoichiometry: AX • Circle the crystal structure: AX2 A2X ABX3 Zinc Blende Cesium Chloride Sodium Chloride Perovskite Fluorite • Justify your answers for the above two questions using one or two sentences. Calculate the density of CoO in units of g/cm³.
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter10: Liquids And Solids
Section: Chapter Questions
Problem 90E: The structures of another class of ceramic, high-temperature superconductors are shown in figures...
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