As we consider that diamond is having cubic structure and we know that the packing fraction for ccp and hcp is 0.74.
Why is diamond packing fraction low?
atomic packing factor (or) packing density is 0.34. It is the lowest packing density material because in diamond, carbon atoms have low mass number, and hence a smaller radius. small atoms cannot be packed closely.
Is diamond close packed?
The diamond structure is a very common form. This structure is based on the cubic close packed structure with 4 additional atoms (pictured as green balls) in holes within the structure. The form of carbon in diamonds has this structure. It is also the structure of crystalline silicon.
How do you find the packing fraction?
The fraction of total space that is filled with the inherent constituent particles of a particular cell or structure is called the packing fraction. It can be obtained by dividing the total volume occupied by constituent particles by the cell’s total volume.
Is diamond cubic or tetrahedral?
The diamond cubic structure is tetrahedrally coordinated, which means that each atom has 4 bonds. That’s why the other elements that form diamond cubic crystals are also in group 14. Silicon, germanium, and α-tin can form the diamond cubic structure.
What type of lattice is diamond?
The diamond lattice can be viewed as a pair of intersecting face-centered cubic lattices, with each separated by 14 of the width of the unit cell in each dimension.
What is the packing factor of diamond?
Packing factor of diamond cubic structure is 0.34. The equation for finding the packing fraction is No of atoms in unit cell ×Volume of atom/Volume of unit cell. Diamond has eight atoms per unit cell.
What structure is diamond?
Diamond is a giant covalent structure in which: each carbon atom is joined to four other carbon atoms by strong covalent bonds. the carbon atoms form a regular tetrahedral network structure.
What is the CN of diamond?
In diamond, coordination number of carbon atoms is 4 and its unit cell has 8 carbon atoms.