Astatine iodide

Astatine iodide is an interhalogen compound with the chemical formula AtI. It is the second heaviest known interhalogen compound, after iodine tribromide.

Production
Astatine iodide is produced by the direct combination of astatine and iodine in a 1:1 molar ratio:


 * At2 + I2 → 2 AtI