Morphing Atoms (IMAGE) Tufts University Caption Chemists at Tufts University, collaborating with PerkinElmer and University College London, have witnessed atoms of one chemical element morph into another for the first time. In this simulation, the purple balls represent radioactive iodine-125 atoms on a gold surface; the green balls are atoms that have undergone nuclear decay into tellurium-125. Credit Courtesy of Sykes and Michaelides Labs Usage Restrictions Non-commercial use only with attribution License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.