Question

icl has a higher boiling point than br2. what is the best explanation for this?
br₂ experiences dipole - dipole interactions.
icl experiences dipole - dipole interactions.
br₂ forms hydrogen bonds.
icl experiences induced dipole - induced dipole interactions.

Explanation:

ICI is a polar molecule due to the difference in electronegativity between iodine and chlorine, and it experiences dipole - dipole interactions. Br₂ is a non - polar molecule as it consists of two identical bromine atoms and only has London dispersion forces (induced dipole - induced dipole interactions). Dipole - dipole interactions are stronger than London dispersion forces, so ICI has a higher boiling point. Br₂ does not have dipole - dipole interactions or hydrogen bonds.

Answer:

ICI experiences dipole - dipole interactions.