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

Each C-atom in diamond is bonded covalently to four C-atoms, and this repitition produces a three-dimensional structure.

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