Which of the following sequential events and fundamental chemical properties accurately describe the — Haloalkanes and Haloarenes Chemistry Question

💡 Solution & Explanation

A) True. Thallation is a classic electrophilic aromatic substitution, distinguished by its high reversibility. B) True. The aryl-thallium bond is easily cleaved by iodide ions ($I^-$) in aqueous conditions to form the aryl iodide. C) False. The thallium group is generally introduced para to existing groups due to bulk; it does not direct subsequent meta attack but rather serves as a leaving group that is directly replaced by iodine at its exact ipso position. D) True. The reaction is a redox process where the aryl group takes on iodine, and $Tl(III)$ is reduced to $Tl(I)$, forming a yellow $TlI$ precipitate.