Unravelling relativistic effects in the heaviest actinide element: First ionization energy of lawrencium determined

9 abril 2015

Scientists have achieved the ionization potential measurement of lawrencium (element 103) with a novel-type technique at the JAEA tandem accelerator. Based on the empirically developed «actinide concept», and in agreement with theoretical calculations, in today’s Periodic Table the series of actinide elements terminates with element 103, lawrencium (Lr). Now researchers have measured the first ionization potential of Lr, which reflects the binding energy of the most weakly-bound valence electron in lawrencium’s atomic shell.