Distinguish between the following pairs of terms
Hexagonal close packing and cubic close packing

How will you distinguish between the following pairs of terms? (i) Hexagonal close-packing and cubic close-packing (ii) Crystal lattice and unit cell (iii) Tetrahedral void and octahedral void

Packing refers to the arrangement of constituent units in such a way that the forces of attraction among the constituent particles is the maximum and the contituents occupy the maximum available space. In two dimensions, there are hexagonal close packing and cubic close packing. In three dimentions, there are hexagonal, cubic as well as body centred close packings. The empty space left in ccp packing is:

Packing refers to the arrangement of constituent units in such a way that the forces of attraction among the constituent particles is the maximum and the contituents occupy the maximum available space. In two dimensions, there are hexagonal close packing and cubic close packing. In three dimentions, there are hexagonal, cubic as well as body centred close packings. The space occupied by spheres in bcc arrangement is:

Packing refers to the arrangement of constituent units in such a way that the forces of attraction among the constituent particles is the maximum and the contituents occupy the maximum available space. In two dimensions, there are hexagonal close packing and cubic close packing. In three dimentions, there are hexagonal, cubic as well as body centred close packings. The pattern of successive layers in ccp arrangement is:

Packing refers to the arrangement of constituent units in such a way that the forces of attraction among the constituent particles is the maximum and the contituents occupy the maximum available space. In two dimensions, there are hexagonal close packing and cubic close packing. In three dimentions, there are hexagonal, cubic as well as body centred close packings. A certain oxide of a metal M crystallises in such a way that O^(2-) ions occupy hcp arrangement following ABAB... pattern. The metal ions however occupy 2//3 rd of the octahedral voids. The formula of the compound is :

Assertion: Hexagonal close packing in more light than cubic close packing. Reason: Hexagonal close packing has C.N of 12 whereas cubic close packing has C.N. of 8.

Which of the following statements is not true about the hexagonal close packing-

Which of the following describes the hexagonal close packed arrangement of spheres ?

What is the co-ordination number of each sphere in cubic close packing and hexagonal close packing ?

Which of the following statements is not true regarding hexagonal and cubic close-packed structures-