Question

what are the limitations of Bohr's theory ​

Answer 1

Limitations of Bohr's theory:

(a) He could not explain the line spectra of atoms containing more than one electron .

(b) He also could not explain the presence of multiple spectral lines.

(c) He was unable to explain the splitting of spectral lines in magnetic field ( Zeeman effect) and in electric field ( stark effect) .

(d) No one conclusion was given for the principle of quantisation of angular momentum.

(e)He was unable to explain the de- Brogile's concept of dual nature of matter.

(f) He could not explain the Heisenberg's uncertainty principle.

Answer 2

Answer :

Limitations of Bohr's Model of Atom -

• Bohr was successful in explaining the line spectra of hydrogen but unable to explain line spectra of multielectron atoms.
• Bohr's model was unable to explain the sppliting lines I. the magnetic field and the electric field.
• Bohr's model was successful in explaining the electron movements in one plane but unable to explainb the three dimensional model of atom.
• It was unable to explain the shape of molecules.
• It was unable to explain de Brogile concept of dual Nature of matters and also the Heisenburg uncertainty principle.
• It was unable to explain the concept of elliptical orbits.
• Also unable to explain why angular momentum of electrons has been assumed.
• It was unable to explain electron spin energy.