Concept:Diamond is a covalent crystal where carbon atoms are bonded by strong covalent bonds in a tetrahedral network.
Explanation:In diamond, each carbon atom forms four single covalent bonds with neighboring carbon atoms.
This creates a rigid, three-dimensional crystal lattice.
Covalent crystals are hard, have high melting points, and are poor conductors of electricity.
Diamond is a classic example of a covalent crystal, unlike metallic, ionic, or molecular crystals.
Answer:Covalent Crystal (Option B).