Question

Which of the statement regarding 3-D bcc closed packing is correct?

• A. Spheres in first layer are touching each other.
• B. Sphere in second layer is placed at hollow space of layer 1
• C. Arrangement of third layer is different to that of first layer
• D. All of the above.

Answer 1

The correct option is B Sphere in second layer is placed at hollow space of layer 1

In 3D bcc closed packing, spheres of first layer are not touching each other.
The spheres in second layer are not touching with each other, placed at the top of the hollow spaces in the first layer​.
The spheres in the third layer​ are placed exactly as in the first layer​.


Hence, the correct option is (b).