Neils Bohr (1913)

In 1913 Bohr proposed a model of the hydrogen model based on quantum theory. Bohr also proposed that electrons move around the nucleus but only in prescribed orbits. When an electron moves from their energy level into either a higher or lower energy level radiation is given off. Bohr’s model replaced Rutherford’s model. For Bohr's contribution to the atomic theory he won the 1922 Nobel prize in physics.