Q.1. Describe the two shortcomings of Bohr model of atom.

Ans:- The two shortcomings of Bohr model of atom are following :

(i) This theory is applicable only to hydrogen like single electron atoms and fails in the case of atoms with two or more electrons.

(ii) In the spectrum of hydrogen, certain spectral lines are not single lines but a group of closed lines with slightly different frequencies. Bohr’s theory could not explain these fine features of the hydrogen spectrum.