Question

Diamond is covalent, yet it has high melting point. Why ?

Answer 1

Structure of Carbon:

Diamond has a three-dimensional network involving strong $C-C$ bonds. Each carbon atom is covalently bonded to four other carbon atoms in diamond.

The structure of diamond is given as-


High melting point of diamond:

Large amount of energy is required to separate the carbon atoms. This is because covalent bonds are strong. That is why diamond has high melting point.

The ultimate melting point of diamond is about ${4,027}^{\circ }C$ .