Classification of Solids & Properties of Ionic Solids Classification of Solids 1. Ionic Solids 2. Covalent Solids 3. Metalic Solids 4. Molecular Solids Properties of Ionic Solids: 1. Physical State 2. Melting and Boiling Points 3. Non-directional and close packing 4. Radius Ratio 5. Formula Mass 6. Electrical conductivity 7. Brittleness 8. Density 9. Fast Reactions Liquid And Solids chapter No 4 chemistry part 1