The penultimate elements infographic focuses on the Actinides. Many of these elements don’t occur naturally, and are produced synthetically, with some of them existing only for a fraction of a second before they decay back into lighter elements.
The penultimate elements infographic focuses on the Actinides. Many of these elements don’t occur naturally, and are produced synthetically, with some of them existing only for a fraction of a second before they decay back into lighter elements.