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Demerits of bohr model?

•     It violates the Heisenberg 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.

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

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

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