Explain Bohr's atomic model.

Explanation

(1) Bohr model is applicable to hydrogenic atom. It cannot be extended even to atom like helium which contain two electrons.
Also hydrogen spectra is made up of more than one lines. This cannot be explained by Bohr model.
(2) While the Bohr.s model correctly predicts frequencies of light emitted by hydrogenic atoms. The model is unable to explain relative intensities of the frequencies of spectrum.
(3) Bohr model is unable to explain variation in intensities. Thus, by Bohr model intensities of spectral lines can not be explained.
(4) Bohr model cannot be applied to complex atom for complex atoms, we have to use new theory based on quantam mechanics. In calculation of Bohr model classical mechanics is used. This is an odd combination of classical physics and quantum principles.
(5) Orbit of electron need not be circular. It can be elliptical (oval) shape also.