C&EN1 年
Lesson 4.5: Energy Levels, Electrons, and Ionic Bonding
The reaction releases a lot of heat as the ionic compound sodium chloride is formed. A sodium and chlorine atom are near each other. An electron from each atom feels the attraction from the other atom ...
C&EN1 年
Lesson 4.3: The Periodic Table and Energy-Level Models
The electrons surround the nucleus in 3 dimensions but it is easier to show an energy level model in two dimensions like the model that looks like a target. This energy level model shows two electrons ...