Question

calculations of no. of atoms present in end centre unit cell​

Answer 1

Explanation:

Talking about the end-centred cubic unit cell, 8 atoms are placed on the 8 corners of the cube and 1 atom each is placed on two opposite faces of the cube. Thus, we can say that, if 8 atoms are present on 8 corners, then each atom will contribute 18th portion. So, 2×12=1 atom. Therefore, the total number of atoms is 2.