Carbon

Question 1

Diamond

Answer 1

All the carbon atoms in diamond form single bonds only. Each carbons is bonded to 4 other carbon atoms in a tetrahedral shape. Each bond is of equal strength and each atoms is packed in the most efficient way.

Question 2

Graphite

Answer 2

Each atoms forms three single covalent bonds with other atoms forming covalently bonded layers of atoms. The fourth bond formed is unusual in that the electrons are delocalised between the layers.