Question

What intermolecular force present in lithium iodide?

Answer 1

Lithium iodide is used as an electrolyte for high temperature batteries. It is also used for long life batteries as required, for example, by artificial pacemakers. The solid is used as a phosphor for neutron detection.[6] It is also used, in a complex with Iodine, in the electrolyte of dye-sensitized solar cells.

In organic synthesis, LiI is useful for cleaving C-O bonds. For example, it can be used to convert methyl esters to carboxylic acids:[7]

RCO2CH3 + LiI → RCO2Li + CH3I

Similar reactions apply to epoxides and aziridines.

Lithium iodide was used as a radio contrast agent for X-ray computed tomography imaging studies. Its use was discontinued due to renal toxicity, replaced by organic iodine molecules. Inorganic iodine solutions suffered from hyperosmolarity and high viscosities.

Answer 2

Explanation:

Lithium iodide is an ionic compound as it is formed by transfer of an electron from lithium atom to iodine atom. And also, there is high difference in electronegativity of both lithium and iodine.

Hence, there exists strong electrostatic intermolecular force of attraction in a molecule of lithium iodide due to formation of a positive charge on lithium and a negative charge on iodine ion.

Thus, we can conclude that strong electrostatic intermolecular force is present in lithium iodide.