Total number of species which used all three p-orbitals in hybridisation of central atoms and should — Chemical Bonding Chemistry Question

💡 Solution & Explanation

Step 1: Identify that the melting point of a solid depends on the strength of the forces holding its crystal lattice together. Step 2: Ionic, metallic, and network covalent solids are held together by strong primary bonds. In contrast, molecular solids are held together by much weaker secondary forces (like dispersion forces, dipole-dipole, or hydrogen bonding). Step 3: Because these intermolecular attractions are easily overcome, molecular solids typically exhibit the lowest melting points.