Question

The simple Bohr model cannot be directly applied to calculate the energy levels of an atom with many electrons. This is because

• A. of the electrons, not being subject to a central force.
• B. of the electrons colliding with eachother
• C. of screening effects
• D. the force between the nucleus and an electron will no longer be given by Coulomb's law.

Answer 1

Answer: (A)

of the electrons, not being subject to a central force.

As the mass of an electron is negligible as compared to a nucleon, so electron cannot being subject to central force verifies answer (a).