Answer:
Tetra iodine nonoxide (I₄O₉) IF₇
Explanation:
Tetraiodine nonoxide (I4O9) was formulated but not thoroughly researched for the gas-phase combination of I2 with O3. The chemical substance is iodine pentoxide with either the equation I2O5. The anhydride of iodic acids and the only secure oxide of iodine however is iodine oxide.
