In Silicon crystal silicon atoms constitutes fcc where four out of 8 tetrahedral holes are also occupied by SI atom.Calculate the total number of effective atoms in a unit cell

In silicon crystal, Si atoms from fcc arrangement where 4 out 8 TVs are alos occupied by Si atoms. Z_(eff) of unit cell is

Diamond has a three dimensional structure of C atoms formed by covalent bonds. The structure of diamond has face centred cubic lattice where 50% of the tetrahedral voids are also occupied by carbon atoms. The number of carbon atoms present per unit cell of diamond is_________.

In a diamond, each carbon atom is bonded to four other carbon atoms tetrahedrally. Alternate tetrahedral voids are occupied by carbon atoms. The number of carbon atoms per unit cell is:

Diamond exists in FCC unit cell with 50% tetrahedral sites also occupied. The effective number of carbon atoms in a unit cell of diamond is