Question

Compare the physical properties of two forms of carbon: diamond and graphite

Answer 1

Diamond and graphite are allotropes of carbon  and have various differences in their physical properties.

Explanation:

Diamond:

1. It is crystalline in nature
2. Each  Each C is  $sp^{3}$ hybridized and forms 4 covalent binds with neighboring  C atoms
3. The geometry is tetrahedral
4. C-C bond length is 154 pm
5. It has rigid covalent boning which is difficult to break.
6. It acts as an electric insulator

Graphite:

1. It has layered structure
2. Each C atom is sp2  hybridized and forms 3 sigma  bonds with 3 other C atoms. Fourth electron forms pi bond.
3. The geometry is planar
4. C-C bond length is 141.5 pm
5. It is soft. Its layers can be separated easily
6. It is good conductor of electricity.

This is the comparison of the physical properties of two forms of carbon: diamond and graphite