In cubic close packing of spheres in three dimensions,the coordination number of each sphere is

The number of particles present per unit cell of a body centered cube is

The substance which conduct electricity in the solid state is

If a≠b≠c, B≠90^o the crystal system is

The crystal which shows both Frenkel as well as Schottky defect is

In a close packed array of 'N' sphere the number of tetrahedral voids are

Silicon when doped with Arsenic gives

In a solid AB having rock salt structure, 'A' atoms occupy the corners of the cubic unit cell. If all the face-centered atoms along one of the axes are removed, then the resultant stoichiometry of the solid is

Body diagonal of a cube is 866pm. Its edge length would be

The phenomenon in which crystals produce electricity on applying pressure is