| Molecular solids | Covalent solids | Metallic solids | Ionic solids | |
| 1 | These are made up of molecules. | These are formed by the network formed by the atoms. | These solids are formed in metals only by the special bonding. | These are formed by the electrostatic attraction between oppositely charged ions. |
| 2 | The molecules are held by the weak van der waal’s forces. | The atoms are held by the networking covalent bonds. | The atoms are held by strong metallic bonds by sharing of free electrons. | The ions are strongly held by the electrostatic forces of attraction. |
| 3 | these are soft kind of solids. | these are hard. | These are hard , ductile and malleable. | These are hard and brittle. |
| 4 | These are insulators, that is bad conductors of electricity. | These are also insulators , except graphite. | These are very good conductors. | These are insulators in dry state , but are conductor in molten and aqueous solution. |
| 5 | Examples are:- dry ice CO2 , I2 , camphor. | Graphite , diamond and fullerenes | Iron , Copper , Nickel and silver | NaCl, KCl and CaF2 |
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