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 2 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