Question

Why edge centred arrangement is not possible in cubic unit cell?

Answer 1

Answer:

Consider a cubic unit cell of crystal that is composed of a single kind of atom. By placing atoms at every corner of the cube, a simple cubic lattice is formed. Assume that the atoms are perfect hard spheres with a radius r and that the atoms are in close contact to minimize the volume of the cube.

In a simple cubic lattice, the volume occupied by the atoms is (?) % that of the cube, and the length of the edge of the cube is (?)r.

To the simple cubic lattice described above, atoms are added to all face-center positions of the cube. In the resulting lattice, the volume occupied by the atoms is (?) % of the cube, and the length of the edge of the cube is (?)r.

Answer 2

Answer:

it is the consider of the earth Centre arrangement is not possible in a cubic unit sale in Amazon arrowsol form of suspension of heterogeneous mixture because its particle can be seen by naked eyes❤️‼️