When light hits solar cells, so-called electron-hole pairs are created: the electrons are excited and can move almost freely ...

News Published: 25 January 1930 A Table of Electronic Configurations of the Elements Nature 125, 146 (1930) Cite this article ...

Chemistry and physics are combining forces at Columbia, and it's leaving everyone frustrated—in a good way. New work, ...

Dot and cross diagrams help us to model when ions are formed from atoms. Here’s an example using sodium and chlorine. They form ions which bond to form sodium chloride. 2. Work out how many ...

The historical development of the electronic configuration model is traced and the status of the model with respect to quantum mechanics is examined. The successes and problems raised by the model are ...