Consider applying the Bohr model to a neutral helium atom. The model takes into account a number of factors. Which one of the following does it not take into account?
(a) The quantization of the orbital angular momentum of an electron
(b) The centripetal acceleration of an electron
(c) The electric potential energy of an electron
(d) The electrostatic repulsion between electrons
(e) The electrostatic attraction between the nucleus and an electron