Question

Number of atoms per unit cell if atoms are pre at the corner of unit cell and 2 atoms at each

Answer 1

Hey mate here's your answer

There are four body diagonals in a cube. As there are two atoms on each diagonal, there are a total of 4 x 2 = 8 atoms on the diagonals. These 8 atoms are within the body of the cubic unit cell and are not shared by other units.