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Unformatted text preview: 4. Gold has a face centered cubic unit cell. If the edge of the unit cell is 0.408 nm, what is the radius of a gold atom? 5. One crystalline form of iron has a density of 7.93 g/cm 3 and a unit cell edge length of 0.286 nm. How many iron atoms are in the unit cell? 6. RbCl has chloride ions in a face centered cubic array and rubidium ions on every cell edge. The ratio of Rb + to Cl-is 0.84. If the density of RbCl is 2.76 g/cm 3 , what is the radius of a Rb + ion?...
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- Fall '02