Question

Which one has the highest melting point?

• A. Ionic crystal
• B. Molecular crystal
• C. Covalent crystal
• D. Metallic crystal

Answer 1

The correct option is C Covalent crystal

Covalent crystal has the highest melting point. For example, the melting point of the diamond is 3550 ${}^{o}C$.

The high melting point is due to the presence of strong covalent bonds that lead to the formation of a giant three-dimensional network.

Hence, the correct option is $\text{C}$