Question

state two limitations of bohr's model of atom.

Answer 1

It is in violation of the Heisenberg Uncertainty Principle. The Bohr Model considers electrons to have both a known radius and orbit, which is impossible according to Heisenberg.

Answer 2

The limitations of Bohr's model of an atom are:

● This theory is applicable only to simplest atom like hydrogen, with Z = 1. The theory fails in case atoms of other elements for which Z > 1.

● The theory does not explain why orbits of electrons are taken as circular, while elliptical orbits are also possible.

● Bohr's theory does not explain the fine structure of spectral lines even in hydrogen atom.

● Bohr's theory does not say anything about the relative intensities of spectral lines.

● Bohr's theory does not take into account the wave properties of electron.


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