According to Bohr Atomic model, a small positively charged nucleus is surrounded by revolving negatively charged electrons in fixed orbits. He concluded that electron will have more energy if it is located away from the nucleus whereas the electrons will have less energy if it located near the nucleus.

Limitations of BohrAtomic Model Theory:

1.It violates theHeisenberg Uncertainty Principle. The Bohr atomic model theory considers electrons to have both a known radius and orbit i.e. known position and momentum at the same time, which is impossible according to Heisenberg.

2.The Bohr atomic model theory made correct predictions for smaller sized atoms like hydrogen, butpoor spectral predictions are obtained when larger atoms are considered.

3.It failed to explain the Zeeman effect when the spectral line is split into several components in the presence of a magnetic field.

4.It failed to explain the Stark effect when the spectral line gets split up into fine lines in the presence of an electric field