The fcc unit cell is a cube with atoms at each of the
Chapter 12, Problem 139(choose chapter or problem)
The fcc unit cell is a cube with atoms at each of the corners and in the center of each face, as shown here. Copper has the fcc crystal structure. Assume an atomic radius of 128 pm for a Cu atom. CCl41l2 25 C 3.50 g CCl4 25 C, Hfus=3.28 kJ mol1.59 g>mL; -1; -23 C; 77 C; CCl4. (a) What is the length of the unit cell of Cu? (b) What is the volume of the unit cell? (c) How many atoms belong to the unit cell? (d) What percentage of the volume of the unit cell is occupied? (e) What is the mass of a unit cell of copper? (f) Calculate the density of copper.
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