Aluminum metal crystallizes in a cubic close-packed structure (face-centered cubic cell,...

Aluminum metal crystallizes in a cubic close-packed structure (face-centered cubic cell, Figure 11.34). (a) How many aluminum atoms are in a unit cell? (b) What is the coordination number of each aluminum atom? (c) Assume that the aluminum atoms can be represented as spheres, as shown in the drawing for Exercise 11.61. If each Al atom has a radius of 1.43. what is the length of a side of the unit cell? (d) Cat the density of aluminum metal.