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Lab 6 - Solid State Modeling CH102 Lab 6 Goals Explore unit...

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Solid State Modeling CH102, Lab 6 Goals : Explore unit cell stoichiometry to visualize the arrangement of atoms and ions in common solid state structures. To gain a working knowledge of unit cells, packing efficiency and coordination numbers. Safety : No chemicals will be used. Please wear proper attire and safety glasses. Waste : No waste will be generated in this lab.
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X O X O X O X O O X O X O X O X X O X O X O X O O X O X O X O X Prelab Assistance Crystalline solids have long range order in the crystal lattice. O X X O Unit cell : smallest unit that represents the crystal lattice and empirical formula. Repetition of the unit cell will generate the crystalline solid.
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Position of Atoms in Cubic Unit Cells center face edge corner 1 atom Unit cell 1 atom • ( 1 atom inside cell) = 6 atom • ( atom inside cell) = 12 atom • ( atom inside cell) = 8 atom • ( atom inside cell) = 3 atoms Unit cell 3 atoms Unit cell 1 atom Unit cell
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Types of Unit Cells The SAME type of atom can be packed in !
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