In a face centred cubic cell , an atom at the face contributes to the unit cell (a) 1/4 part (b) 1/8 part (c) 1 part (d) 1/2 part an atom at the face contributes to the unit cell (a) 1/4 part (b) 1/8 part (c) 1 part (d) 1/2 part In a face centred [...]