Question

Give three important limitations of Bohr atomic model.

Answer 1

Limitations of bohr atomic model are given :

1. it does not explain the spectra of multi electron atoms

2. when a high resolving power spectroscope is used, it is observed that a spectral line in the hydrogen spectrum is not a simple line but a collection of several lines which are very close to one another.

this is known as fine spectrum.

Bohr 's theory does not explain the fine spectra of even hydrogen atom

3. Bohr 's theory is not in agreement with Heisenberg 's uncertainty principle.

4. it does not explain the splitting of the spectral lines into a group of finer lines under the influence of magnetic field which is called Zeeman effect and under the influence of electric filed which is called stark effect.

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Answer 2

1. Unable to explain the spectrum of multi - electron atoms
2. Unable to explain splitting of spectral lines in electric field.
3. Fails to explain finer details of hydr