Q. The number of octahedral void(s) per atom present in a cubic close-packed structure is
A) 4
B) 1
C) 3
D) 2
Explanation
[Solution from source] A ccp (fcc) unit cell has 4 atoms and 4 octahedral voids (1 at the body centre + 12 edge centres × ¼), so there is 1 octahedral void per atom. 2 is the number of tetrahedral voids per atom. Answer (2).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.