Unit Cells in Three Dimensions-Filling a Crystal Lattice 7. Determine the length of the unit cell edge (that is, the lattice vector a) in terms of the atomic radius, r, and the packing density (the percentage of space that is filled) for each of the following structures. Structure Primitive cubic Body-centered cubic Face-centered cubic AS Packing density (%)

Chemistry: Principles and Reactions
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Chapter9: Liquids And Solids
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Problem 60QAP: Aluminum metal crystallizes with a face-centered cubic unit cell. The volume of the cell is 0.0662...
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Unit Cells in Three Dimensions-Filling a Crystal Lattice
7. Determine the length of the unit cell edge (that is, the lattice vector a) in terms of the atomic radius, r, and
the packing density (the percentage of space that is filled) for each of the following structures.
Structure
Primitive cubic
Body-centered cubic
Face-centered cubic
Structures of Ionic Substances
8. Close-packed layers:
Layer 2 a
Cations Octahedral Holes
au
Layer 2b
Cations Tetrahedral Holes
Packing density (%)
Layer 2c
ations Tatraband
Transcribed Image Text:Unit Cells in Three Dimensions-Filling a Crystal Lattice 7. Determine the length of the unit cell edge (that is, the lattice vector a) in terms of the atomic radius, r, and the packing density (the percentage of space that is filled) for each of the following structures. Structure Primitive cubic Body-centered cubic Face-centered cubic Structures of Ionic Substances 8. Close-packed layers: Layer 2 a Cations Octahedral Holes au Layer 2b Cations Tetrahedral Holes Packing density (%) Layer 2c ations Tatraband
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