The two electrons in a helium atom are separated by about 0.10 nm and the separation between either electron and the nucleus is about 0.050 nm. What is the total electric potential energy of the atom? Assume the nucleus is a point charge with q = +2e and for simplicity do not include the potential energy associated with the Coulomb repulsion of the two protons in the nucleus. Compare your answer with the ionization energy of a helium atom and with the energy required to remove both electrons from a helium atom.