Q.Intermolecular forces in liquid are - a. greater than gases b. less than solids c. both a and b d. greater than solids

Intermolecular forces are the attractions between the particles of a solid that hold them together in the crystal. Their nature decides the class and properties of the solid.

Main types:

• Ionic (electrostatic) forces — strong attraction between oppositely charged ions (NaCl).
• Covalent bonds — a continuous network of shared-electron bonds (diamond).
• Metallic bonding — attraction between cations and delocalised electrons (Cu).
• Dipole–dipole and van der Waals (London dispersion) forces — weak attractions in molecular solids. …