Question

Diamond has a _______ structure, whereas graphite has a ________ structure.

• A. hexagonal layered, octahedron
• B. tetrahedral, square pyramidal
• C. tetrahedral, hexagonal layered
• D. hexagonal layered, pentagonal

Answer 1

The correct option is C tetrahedral, hexagonal layered

$\bullet$ Diamond is a crystalline allotrope of carbon in which each carbon atom is covalently bonded to four other carbon atoms. It forms a rigid 3D tetrahedral structure as shown below.

$\bullet$ Graphite is another crystalline allotrope of carbon. In graphite, each carbon atom is covalently bonded to three other carbon atoms, thus forming a hexagonal layered structure. Each of these layers is joined together by weak forces of attraction.