Question

What is the total number of spheres that surrounds the tetrahedral hole in the close-packed three-dimensional structure?

• A. \(2\)
• B. \(4\)
• C. \(6\)
• D. \(8\)

Hint:

A tetrahedral void sits among 4 touching spheres.

Answer 1

The Correct Option is B

Step 1: Use coordination
The hole has coordination number $4$ with the surrounding spheres at the corners of a tetrahedron, so $4$.

Step 2: Result
Option (B).

Final Answer:
Option (B). \[ \boxed{\text{(B)}} \]