Sage-Tips

Does diamond have a close packed plane?

Diamond Structure This structure is based on the cubic close packed structure with 4 additional atoms (pictured as green balls) in holes within the structure. Note that each atom in the diamond material has 4 bonds to other atoms and these 4 bonds form a tetrahedral array.

How do you find the density of a diamond?

1. 3.509 g/cm3. B.
2. 7.012 g/cm3. C.
3. 10.12 g/cm3. D.
4. 3.509 g/cm3. ρ=NA​×a3Z×M​ The lattice points in the FCC lattice are at the corners of the cube and face center. Since it is given in the question that at each lattice point there are 2 atoms, So, the z will be- Z=2×8×81​+2×6×21​ Z=8. M=12 g/mol for carbon, NA​=6. 023×1023/mol.

How do you calculate packing efficiency?

Packing Efficiency

1. Calculate the volume of the unit cell.
2. Count how many atoms there are per unit cell.
3. Calculate the volume of a single atom and multiply by the number of atoms in the unit cell.
4. Divide this result by the volume of the unit cell.

What is the formula of packing efficiency?

Packing efficiency = Volume occupied by 6 spheres ×100 / Total volume of unit cells. Examples are Magnesium, Titanium, Beryllium etc. In body-centered cubic structures, the three atoms are arranged diagonally.

What is the packing efficiency in CCP?

For both HCP and CCP, the packing efficiency is 74.05 \%.

Is diamond a BCC or FCC?

1.5. 1 Diamond Cubic Structure For example, in diamond, the base lattice is FCC and is built by the C atoms with half of the tetrahedral sites filled by C atoms. Thus, the unit cell of diamond contains a total of 8 atoms. The structure is typically called as diamond cubic structure.

What is the density of diamond in G cm3?

3.51 gm/cm3
Diamond is a crystalline form of carbon which has a density of has a density of 3.51 gm/cm3 compared to 2.26 gm/cm3 in the graphite form. Imperfectly formed crystalline forms of diamond are called bort and black diamond.

What is the luster of a diamond?

Adamantine
Diamond/Luster

Diamond’s unique optical and physical properties give it the highest possible lustre of any transparent gemstone. This is called adamantine lustre after the Greek word Adamas meaning diamond-like.

What is the packing efficiency of diamond in unit cell?

Hence, the packing efficiency of diamond is 34\%. Means in diamond type unit cell the maximum volume of spherical particles can be used only 34\% remaining 66\% will be empty called voids. Please note that the formula for calculating the value of packing efficiency in diamond unit cell is [(n × 4/3 πr³) / a³] × 100. where n = 8 and a = 8r/√3.

How do you find the packing fraction of a diamond?

Substitute the number of atoms per unit cell into the equation. Diamond has eight atoms per unit cell, so the diamond packing fraction equation now becomes: Packing fraction = 8 x (V atom) / V unit cell. Substitute the volume of the atom into the equation.

What is the packing efficiency of a diamond capacitor?

The packing efficiency of diamond is In the structure of diamond C atom present at all corners , all face centres and 50 \% tetrahedral voids. A parallel plate capacitor whose capacitance C is 14 pF is charged by a battery to a potential difference V = 12 V between its plates.

What is packing efficiency and how is It measured?

Packing efficiency is defined as the total volume occupied or covered by the spherical shaped particles (weather it is atoms or molecules) in a cubic unit cell. In most simple words packing efficiency is how much the volume percentage of a cubic unit cell can be used by the spherical particles.