Actinides on the periodic table (IMAGE) DOE/Oak Ridge National Laboratory Caption Actinides are the 15 metallic elements on the periodic table with atomic numbers from 89-103, actinium through lawrencium. Credit Christopher Orosco/ORNL, U.S. Dept. of Energy Usage Restrictions Use with credit License Original 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.