Question

What type of solid is the diamond?

• A. Molecular solid
• B. Metallic solid
• C. Covalent network solid
• D. Ionic solid

Hint:

Each carbon in diamond is covalently bonded to four others in a continuous three-dimensional network.

Answer 1

The Correct Option is C

Step 1: Understanding the Concept
In diamond every carbon atom is \(sp^{3}\) hybridised and covalently bonded to four other carbon atoms in a tetrahedral arrangement.

Step 2: Network structure
The bonds extend in all directions, so the whole crystal is one giant molecule with no separate molecules or ions.

Step 3: Result
This explains its great hardness and very high melting point, so diamond is a covalent network solid.

Final Answer:
Diamond is a covalent network solid. \[ \boxed{\text{(C) }\text{Covalent network solid}} \]