A That of Al is higher than that of Mg because Mg wants to lose the second electron so it is easier to take the second electron away. Ionization energy amount of energy it takes for an atom to LOSE an electron so A is proven wrong already Why B and C are wrong. The Parts Of The Periodic Table O 2s 22p 3. . A 735 kJmol b less than 735 kJmol c greater than 735 kJmol d More information is needed to answer this question. E None of these. Xg X2-g e- Just like the first ionization energy IE_2 is affected by size effective nuclear charge and electron configuration. That of Al is lower than that of Mg because Mg wants to lose the second electron thus the energy change is greater. Which one of the following statements is true regarding ionization energies-Ionization energies are all endothermic-First ionization energies are exothermic while second and successive ionization energies are endothermic-Ionization energies are all exothe...