Molecular solids have lower melting points than ionic solids due to their weak intermolecular forces. Ionic solids are held together by strong electrostatic forces, requiring more energy to melt. Therefore, among the options given, molecular solids are the correct choice. ;
Molecular solids typically have lower melting points than ionic solids due to the weak intermolecular forces that hold them together. In contrast, ionic solids, which are held by strong ionic bonds, have much higher melting points. Therefore, the answer is C. Molecular solids.
;