Lab 6 PostLab - Solid State Modeling - Lab 6 PostLab Solid...

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Lab 6 PostLab - Solid State Modeling (Postlab) Devin Van Pelt CH 102, section 026, Fall 2014 Instructor: Lori Petrovich Current Score : 23 / 25 Due : Thursday, October 16 2014 11:00 PM EDT 1. 5/5 points | Previous Answers NCSUGenChem102LabV1 6.POST.01. Green checks and red X's are not displayed for this question. Match the picture to the type of cubic unit cell and rank the unit cells in their relative packing efficiency. Figure 1 Figure 2 Figure 3 Figure 1 Figure 2 Figure 3 Cell name Face-centered cubic Face-centered cubic Simple Cubic Simple Cubic Body-centered cubic Body-centered cubic Packing efficiency Best Best Lowest Lowest Medium Medium Additional Materials Solid State Modeling 2. 5/5 points | Previous Answers NCSUGenChem102LabV1 6.POST.02. In modeling solid-state structures, atoms and ions are most often modeled as spheres. A structure built using spheres will have some empty, or void, space in it. A measure of void space in a particular structure is the packing efficiency , defined as the volume occupied by the spheres divided by the total volume of the structure. Given that a solid crystallizes in a body centered cubic structure that is 3.49 on each side, answer questions (a)-(e). (1 = 1. 10 -10 m.) (a) How many total atoms are there in each unit cell?

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