Question

Covalent-molecules are usually held in a crystal structure by

• A. Dipole-dipole attraction
• B. Electrostatic attraction
• C. Hydrogen bond
• D. Van-der waal's attraction

Answer 1

The correct option is D Van-der waal's attraction

The atoms in molecular covalent molecules are held together by strong covalent bonds. Although these bonds are strong, there are only weak forces of attraction between molecules. These weak attractive forces are called

$\text{van der Waal's}$ $forces$ and can be broken with little energy.