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

Options

A. of the electrons not being subject to a central force
B. of the electrons collliding eith 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 Bogr model cannot be directly applied to calculate the energy levels of an atom with many electrons. This is because of the electrons not be-ing subject to a central force.