Solid State Structures Report Sheet I. Simple Cubic Lattice 1. How many unit cells are constructed with the 27 spheres? 2. How many unit cells share the red sphere? 3. What fraction of this sphere lies within each unit cell? 4. How many nearest neighbors does each sphere have? 5. How many spheres make up one unit cell? 6. How many cubic holes per unit cell? 7. Express the value of a in terms of r. 8. Where are the Cs+ located? 9. What is the coordination number for Cs+? 10. What is the coordination number for Cl