Question

The structure of diamond and graphite is respectively:

• A. 3D-Tetrahedral, 3D-tetrahedral
• B. 3D-Tetrahedral, hexagonal layered
• C. 3D-Pyramidal, 3D-pyramidal
• D. 2D-Tetrahedral, hexagonal layered

Answer 1

The correct option is B

3D-Tetrahedral, hexagonal layered

Since each C-atom in diamond forms four covalent bonds, it produces a repetitive tetrahedral three-dimensional structure using only covalent bonds.

Graphite is composed of flat two- dimensional sheets or layers of the carbon atom. Each sheet or layer consists of flat hexagonal rings of C-atoms and in each layer, each C-atom is linked to three C-atoms by C-C covalent bond. The layers are joined together by weak van der waals forces.