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Section 12.3 Ionic Solids

Section 12.3 Ionic Solids. Bill Vining SUNY Oneonta. In these sections… Ionic solid unit cells and formulas Holes in unit cells of anions Cesium chloride, sodium chloride and zinc blend What controls which shape a solid takes? Calculations related to unit cell dimensions.

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Section 12.3 Ionic Solids

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  1. Section 12.3 Ionic Solids Bill Vining SUNY Oneonta

  2. In these sections… Ionic solid unit cells and formulas Holes in unit cells of anions Cesium chloride, sodium chloride and zinc blend What controls which shape a solid takes? Calculations related to unit cell dimensions Types of Solids and Metallic Solids

  3. Ionic Solids and Formulas cesium oxide (Cs on cornder, O on edges)

  4. Ionic Compound Anion Unit Cells with Cations Occupying Holes

  5. Cubic Holes in Simple Cubic Unit Cells

  6. Octahedral and Tetrahedral Holes in FCC Unit Cells

  7. Octahedral and Tetrahedral Holes in FCC Unit Cells

  8. Three Important Ionic Unit Cells: cesium chloride

  9. Three Important Ionic Unit Cells: sodium chloride

  10. Three Important Ionic Unit Cells: sodium chloride

  11. Three Important Ionic Unit Cells: zinc blend

  12. Review of Anion Lattices and Holes in NaCl and zinc blend Unit Cells

  13. Comparison of ZnS and SrCl2 Unit Cells

  14. Why do different solids of the same formula type adopt different unit cell structures? Stable arrangement has the greatest coordination number without leaving gaps between the cation and the surrounding ions As r-/r+ increases, coordination # decreases

  15. Determine an ionic radius from unit cell dimensions Magnesium oxide crystallizes with the sodium chloride structure. If the edge length of the unit cell is determined to be 420 pm and the O2-ion is assigned a radius of 126 pm, what is the radius of the Mg2+ion?

  16. CdF2 crystallizes with the CaF2 structure which is represented in the following model, with the anions in green.If the edge length of the unit cell is 540 pm, what is the density of crystalline CdF2 in g/cm3?

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