A-Level Physics Question Analysis Topic: Physics - Bohr's Atomic Model
What are the limitations of Bohr's theory of a hydrogen atom?
1) The Heisenberg Uncertainty Principle is violated. For A-Level Physics, know that it is impossible, according to Heisenberg, for electrons to simultaneously have a known position and momentum, yet the Bohr atomic model theory assumes that they do.
2) When larger atoms are taken into account, the Bohr atomic model theory obtains inaccurate spectrum predictions. It is unable to explain the Zeeman effect when a magnetic field's presence causes the spectral line to divide into numerous lines.
3) It is unable to explain the Stark effect when an electric field's presence causes the spectral line to break into fine lines.
End of analysis. Nice one!