An atom at the corner of the unit cell makes __________ contribution to a particular unit cell.

A : A particle at the corner of CCP unit cell has (1)/(8)th of its contribution to the unit cell. R : In any space lattice the corner of the unit cell is always shared by the eight unit cell.

In bcc lattice, the atoms at the corners of the unit cell are in contact with each other.

The contribution of a particle at the edge centre of a particular unit cell is ,

A solid has a structure in which A atoms are located at the cube corners of the unit cell, B atoms are located at the cube edges of unit cell and the C atoms at the body centre. Formula of the compound

In fcc arrangement of A and B atoms, where A atoms are at corners of the unit cell, B atoms at the face - centers, one of the atoms are missing from the corner in each unit cell then find the percentage of void space in the unit cell.

In a fcc arrangement of P and Q atoms, where P atoms are at the corners of the unit cell, Q atoms at the face centres and two atoms are missing from two corners in each unit cell, then the formula of the compound is