Physicists have filled in some longtime blank spaces on the periodic table, calculating electron affinities of the lanthanides, a series of 15 elements known as rare earths.

Squeezing All Elements in the Periodic Table: Electron Configuration and Electronegativity of the Atoms under Compression. Journal of the American Chemical Society , 2019; 141 (26): 10253 DOI: 10. ...

The electronic configurations of atoms, on which our modern understanding of the periodic table is based, cannot be derived using quantum mechanics (this is because the fundamental equation of ...

Three reasons why the periodic table ... group 1 elements have one electron in their outer shell and ... Some chemists maintain that the decision should come down to electron configuration, ...

A little-known genius figured out where all the elements in the periodic table ... not so much using spectra to figure out electron configurations, ... (s=0, p=1, d= 2, and so on). Shell ...

This video excerpt from NOVA's "Hunting the Elements" explains why some elements are more reactive than others.

Specifically, we investigated the behavior of uranium's so-called 5f electrons—electrons that, despite being located in the inner shells, play a crucial role in the element's chemical properties.

It should have the electron configuration [Ar] 3d 9 4s 2. Instead, its 4s atomic orbital remains unfilled, and one electron goes in its 3d shell, leading to the configuration [Ar] 3d 10 4s 1 ...

The periodic table organizes chemical elements based on atomic weight, electron configurations, ... stabilization of the ...