Chapter 8, Problem 116A

Interpretation Introduction

Interpretation:

The difference between covalent molecular solid and covalent network solid needs to be explained.

Concept introduction:

Covalent bonds are chemical bond where two or more atoms share one or more electron pairs. Polar covalent bonds are formed by unequal sharing of electrons between two covalently bonded atoms.

Answer to Problem 116A

Melting point of covalent molecular solid is lower than covalent network solid.

Explanation of Solution

Covalent molecular solids have weak intermolecular forces of attraction. Thus this solid is soft and have lower melting point. Covalent network solid has strong network of covalent bond thus it has high melting point and are very hard. Physical properties are differing in covalent molecular solids and covalent network solid.

Conclusion

Bond between covalent molecular solid are London dispersion force, dipole-dipole force etc and bond present in covalent network solid is covalent bond.