Final answer:
Ionic compounds have a crystalline structure, are rigid and brittle, have high melting and boiling points, and exhibit poor conductivity in solid form but good conductivity when dissolved or melted.
Step-by-step explanation:
Ionic compounds, also known as salts, are compounds composed of ions held together by ionic bonds. Some properties that characterize ionic compounds include:
- Crystalline structure: Ionic solids have a regular arrangement of ions, forming a crystalline structure.
- Rigidity and brittleness: Ionic solids tend to be rigid and brittle due to the strong electrostatic forces between ions.
- High melting and boiling points: Ionic compounds have high melting and boiling points, indicating strong ionic bonds.
- Poor conductivity in solid form: Ions in an ionic compound cannot move freely in the solid state, making it a poor conductor of electricity.
- Good conductivity when dissolved or melted: Ionic compounds can conduct electricity when dissolved or melted due to the free movement of ions.