Question #4b5e4
1 Answer
Oct 7, 2015
Relatively strong intermolecular interaction.
Explanation:
Iodine is a large atom with a relatively large surface area. Since it is a non polar molecule, the only possible intermolecular interaction is London Dispersion Force (LDF) , the magnitude of LDF increases with the increase of surface area, and therefore, the strong intermolecular interaction between the molecules of iodine will pack the molecules together in order to form a solid.
For bromine, with smaller size than iodine, the intermolecular interaction is relatively weaker and therefore it is liquid at room temperature.
Chlorine and Fluorine, with even more smaller size atoms, they exists as gases at room temperature.
