How will you distinguish between the following pairs of terms:
Hexagonal close-packing and cubic close-packing?
Hexagonal close packing | Cubic close packing |
The spheres of molecules of a particular row In a particular dimension are in a position that they fit into depressions between adjacent spheres of the previous row. | The spheres of molecules are adjacent to each other that each row of sheres in a particular dimension is a repetition of the previous row. |
The spheres of a particles row fit in the depressions between two adjacent spheres of the previous row. | The spheres of a particular row don’t fit in the depression between two adjacent spheres of the previous row. |
This type of packed lattice is found in many metals such as magnesium, zinc,etc. Volume of the unit cell is 24 | This type of close packing of constituent particles is found in metals like copper, silver, etc. Volume of the unit cell is 16 |
