jan 1, 1913 - Bohr
Description:
Expanded upon Rutherford's model: Electrons orbit the nucleus at a certain level (fixed energy and distance from the nucleus), electrons can move from level to level but cannot exist in between levels.Model description: Planetary (electrons orbit the atom in a certain shape like how planets orbit the sun)
Added to timeline:
Date:
jan 1, 1913
Now
~ 111 years ago
