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Get Answers to all your Questions
Which of the following statements is true about molecular solids?
They are formed by the intermolecular forces between molecules
They have high melting and boiling points due to strong covalent bonds
They are usually good conductors of electricity
They have a regular arrangement of molecules in a three-dimensional structure
Answers (1)
Molecular solids are a type of solid material composed of individual molecules held together by intermolecular forces. These intermolecular forces are weaker than covalent or ionic bonds, but they are still strong enough to hold the molecules together in a solid state.
Molecular solids are formed when molecules are attracted to each other through van der Waals forces, hydrogen bonding, or dipole-dipole interactions. These intermolecular forces are a result of the polarity of the molecules and their shapes. As the molecules come closer together, their electrons and charges interact with each other, leading to the formation of a stable solid.
Molecular solids have relatively low melting and boiling points compared to other types of solids because the intermolecular forces are weaker than covalent or ionic bonds. This means that less energy is required to break the intermolecular forces and convert the solid into a liquid or gas.
Unlike metallic or ionic solids, molecular solids are usually poor conductors of electricity. This is because they do not have any free electrons or ions that can move and carry an electric charge. However, some molecular solids can conduct electricity when they are dissolved in water or another polar solvent, due to the presence of ions or charged molecules in solution.
In terms of their structure, molecular solids do not have a regular arrangement of molecules in a three-dimensional lattice like many ionic solids. Instead, they have a more random arrangement of molecules that are held together by the intermolecular forces. This lack of order contributes to their lower melting and boiling points.
In summary, molecular solids are formed by the intermolecular forces between molecules, have low melting and boiling points, are usually poor conductors of electricity, and do not have a regular arrangement of molecules in a three-dimensional structure.
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