How many octahedral voids are present in FCC?
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Answer:
four octahedral voids
Explanation:
On calculation, it can be found out that a fcc unit cell has four octahedral voids effectively. The number of effective octahedral voids in a unit cell is equal to the effective number of atoms in that unit cell.
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Since there are 12 edges, Total number of voids from edges is 3. Also, There is an octahedral void at the very center of the fcc lattice. This is totally inisde the lattice. Hence, total number of octahedral voids in an fcc are 4.
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