Topical Questions
These questions are keyed to the major topics in the chapter. Usually a question that is answered at the back of this book is paired with a similar one that is not.
A primitive cubic unit cell is formed so that the spherical atoms or ions just touch one another along the edge. Prove mathematically that the percentage of empty space within the unit cell is 47.6%. (The volume of a sphere is , where r is the radius of the sphere.)
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