Sections: 00:00 - Introduction 00:45 - Periodic table layout - periods and groups 02:10 - Period and valence shell number 02:52 - s, p, d, and f block elements 04:25 - Finding the number of valence ...

The development of the periodic table as a result of the contributions two scientists. History of the Periodic Table: The development of the periodic table as a result of the contributions of ...

Note: This video is designed to help the teacher better understand the lesson and is NOT intended to be shown to students. It includes observations and conclusions that students are meant to make on ...

In atomic physics and quantum chemistry, the electron configuration is the arrangement of electrons in an atom, molecule, or other physical structure (e.g., a crystal). Like other elementary particles ...