Electron Configuration. ... We now have enough knowledge to build the periodic table from scratch. The electron configuration for hydrogen can be written as 1s 1, where: ...

In the late 1920s, Janet turned his perceptive powers to the chemical elements. He designed various new versions of the periodic table. Unlike most other tables constructed before then, his ...

International Year of the Periodic Table: 150th ... He took a physicist's approach to the table and used a newly discovered quantum theory to create a layout based on electron configurations.

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.

The periodic table captures a subtle pattern that runs through the chemical elements , the fundamental building blocks of everything around us: from the aluminium in bike frames to the xenon gas ...