The simple Bohr model cannot be directly ap-plied to calculate the energy level of an atom with many electrons . This is because.

Options

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

Answer

A

Explanation

The simple Bohr model canno be directly applied to calculate the energy of levels of an atom with many electrons. This is baecause of he electrons not being subject to a central force.