Crystal Structures

Step 1: Concept
Use the density formula: or find the number of unit cells.
Step 2: Analysis
Volume of unit cell ( ) = . Volume of 208 g of element = .
Step 3: Calculation
Number of unit cells = . Number of atoms per unit cell ( ) = .
Step 4: Conclusion
A cubic structure with is body-centered cubic (BCC).
Final Answer:(B)