Home » When an atom of iodine becomes an iodine ion (I–) the radius will? Periodic Table MCQs When an atom of iodine becomes an iodine ion (I–) the radius will? April 16, 2022 15 Views Q. When an atom of iodine becomes an iodine ion (I–) the radius will? A. decrease B. increase C. remain the same D. none Answer: increase