What are the limitation of Bohr's model of an atom?

Explanation

"Limitations :
1. Spectra of multielectron atoms : Bohr.s theory could explain the spectra of Hydrogen and single electron species like `He^(+),Li^(2+),Be^(3+)`, but it fails to explain the spectra of multielectron atoms,
Fine structure : It fails to explain this fine structure of Hydrogen atom."
Splitting up of spectral lines : The theory fails to explain Zeeman effect and Stark effect.
The splitting up of spectral lines when an atom is subjected to strong magnetic field is called Zeeman effect.
The splitting up of spectral lines when an atom is subjected to strong electric field is called Stark effect.
4. Flat model: Bohr.s theory gives a flat model of the orbits. Bohr.s theory predicts definite orbits for electrons considering them as particles. But according to de Broglie electron has both wave nature and particle nature. Bohr.s theory cannot explain this dual role.
It fails to support the uncertainty principle proposed by Heisenberg.
6. It could not explain the ability of atoms to form molecules by chemical bonds.