The 8:8 type of close packing is present in

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

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

The substance which conduct electricity in the solid state is

The existence of a substance in more than one solid modification is known as

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

The edge atom of a cube provides ______ atoms to the cell.

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

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

Silicon when doped with Arsenic gives