Which carbon atom is arranged in a regular tetrahedral structure?
The Carbon atoms in diamond are arranged in a regular tetrahedral structure. The basic unit of diamond consists of one carbon atom covalently linked to four adjacent carbon atoms (since carbon is quadrivalent) which are placed at the four corners of a regular tetrahedron. The angle between each of the four covalent bonds between the central atom and each of the corner atoms is 104 degrees 28 minutes. This basic unit extends throughout the crystal of diamond endowing it with enormous strength.
