Chemistry - Complete Pblock- Question with Solution | TestHub

In the structure of diamond each carbon atom in ${\mathrm{sp}}^3$ hybridised $\&$ is covalently bonded with four other carbon atom held at the corners of a regular tetrahedron by covalent bonds. This results in a very big three dimensional polymeric structure in which $\mathrm{C}$ - C distance is $154\mathrm{pm}$ and bond angle is $109.5^{\circ }$. Owing to very strong covalent bonds by which atoms are held to gether diamond is the hardest substance known.