Question

In a multi layered close-packed structure

• A. There are twice as many tetrahedral holes as many close-packed atoms
• B. There are as many tetrahedral holes as many closed packed atoms
• C. There are twice as many octahedral holes as many close-packed atoms
• D. There are as many tetrahedral holes as many octahedral holes

Answer 1

Answer: (A)

There are twice as many tetrahedral holes as many close-packed atoms

Answer 2

No. of octahedral holes = No. of close packed atoms

& No. of Tetrahedral holes = 2× No. of close packed atoms.