Face centred cube
The face centered cubic (FCC) unit cell has at least 8 lattice points at the corners of the cube and 6 lattice at the face of cube.
No of lattice = 8 lattice at corner + 6 lattice at the face
= 14 lattice.
-each corner in a unit cell will contain 1/8 an atom.
-each face in unit cell will contain 1/2 an atom.
The total number of atoms that can fit into a face-centered cubic unit cell will be:-
no. of atoms = (1/8 X 8) at corners + (1/2 X 6) = 4 atoms