Question

The number of net octahedral sites per square in a ccp (fcc) structure is :

• A. $4$
• B. $6$
• C. $8$
• D. $2$

Answer 1

The correct option is A $4$

Number of octahedral sites per square in a cpp is 4.
Octahedral sites in an fcc are present at the body centre and edge-centres.
Number of octahedral sites = $1+(\frac{1}{4}\times 12)=4$