The ionization energy of an atom, or orbital within an atom, is the energy required to remove the electron to infinity from the nucleus. Consider the lithium atom in its ground state. a) What is its electron configuration? b) The ground state of lithium is similar to a hydrogen atom in a 2s orbital since the unpaired electron in Li is quite far out. The actual ionization energy for this electron is 5.39eV. What ionization energy is expected for the simple model of Li described above? c) The inner electrons in lithium “shield” the outer electron reducing the +3 nuclear charge of the Li nucleus. What effective nuclear charge Z’ would yield the observed ionization energy for Li assuming it is a hydrogen-like atom?Please see detailed notations of the question in the attached file:)