Answer:
Differences between covalent and molecular solids:
Covalent solid
Molecular solid
1. Constituent particles are held by network of covalent bonds.
Constituent particles are held by weak van der Waals forces or hydrogen bond.
2. Made of non-metal atoms.
Made of atoms or molecules.
3. Hard.
Soft.
4. Insulator except graphite.
Insulator.
5. Very high melting point.
Low melting point.
6. Examples: Diamond, graphite, quartz, carborundum, AlN.
Examples: Ice, I2, P4, S8, Naphthalene, camphor, Solid CO2(dry ice).
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