Ceramic bonds are typically

• A. Metallic bonds
• B. Covalent bonds
• C. Ionic bonds
• D. Ionic and covalent

Answer: (D)

Ceramics are bonded primarily through ionic interactions between metal cations and nonmetal anions, with a substantial covalent component from directional bonds in network-forming units like Si–O or Al–O. This mixed ionic-covalent character is typical across many ceramics, giving the strong, high-melting-point networks that define them. Pure metallic bonds aren’t typical for ceramics because metals rely on a delocalized electron sea, which isn’t the dominant bonding in ceramic structures. While some ceramics can have more covalent character, others are more ionic, so the overall bond picture is best described as ionic with covalent contributions.