Question

How does the wave mechanical model of the atom differ from the Bohr model?

Answer 1

Hint: In order to answer this question, to explain the differences between the wave mechanical model of the atom and the Bohr model of the atom, we should go through the explanation of both models. We will also discuss the drawbacks of both models.

Complete answer:
The difference between wave mechanical model and the Bohr model are as follows:-

Wave Mechanical Model	Bohr Model
(i) Wave mechanical model is based on the particle and wave nature of electron is known as wave mechanical model of atom. The motion of electron around nucleus is round motion and may be considered to be analogous to the standing waves the waves which are generated by plucking the stretched string.	(ii) Bohr Model is a system consisting of a small, dense nucleus surrounded by orbiting electrons—similar to the structure of the Solar System, but with attraction provided by electrostatic forces in place of gravity.
(ii) The wave mechanical model, influenced by the Heisenberg uncertainty principle, says that electrons do not orbit in fixed orbits.	(ii) In the Bohr model the electrons revolve around the nucleus in fixed orbits similar to the way planets orbit around the sun.
(iii) The wave mechanical model doesn't claim to know where the electron is at any given time, only probabilities of where it is likely to be.	(iii)  Bohr's model gives the electron orbit an exact travel path.

Note:
Limitations of Bohr’s Model of an Atom Bohr’s model of an atom failed to explain the Zeeman Effect (effect of magnetic field on the spectra of atoms). It also failed to explain the Stark effect (effect of electric field on the spectra of atoms). It violates the Heisenberg Uncertainty Principle.