The Bohr Model
History of the Atom
The Main Points
Electrons surround the nucleus having a set path and size. The smallest orbit has the lowest energy. The size of the orbit has an effect on the energy of the orbit. Radiation is released or absorbed when the electrons move from one place to another.
What's Wrong With the Bohr Model?
The Bohr model only worked up to element 20.
The shape of the "electron racetrack" isn't just a circle, it's all different kinds of shapes.