Question

Iodine molecules are held in the crystals lattice by ______.

• A. london forces
• B. dipole-dipole interaction
• C. covalent bonds
• D. coulombic forces

Answer 1

Answer: (A)

london forces

The London dispersion force is the weakest intermolecular force. The London dispersion force is a temporary attractive force that results when the electrons in two adjacent atoms occupy positions that make the atoms form temporary dipoles. This force is sometimes called an induced dipole-induced dipole attraction.

Iodine molecules are a class of non- polar molecular solid in which constitute molecules are held together by London or dispersion forces. These solids are soft and non-conductor of electricity.

So, the correct answer is option $A$.