Which of the statement(s) regarding 3-D bcc closed packing is/are correct?
A
Arrangement of third layer is different to that of first layer
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B
Sphere in second layer is placed at hollow space of layer 1
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C
Spheres in first layer are touching each other.
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D
Arrangement of third layer is identical to that of first layer
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Solution
The correct option is D Arrangement of third layer is identical to that of first layer 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.