Question

Consider the following Ionization Energies for aluminium. Al  Al+ + e– IE1 = 580 KJ/Mole
Al+ Al2+ + e– IE2 = 1815 KJ/Mole ; Al2+ Al3+ + e– IE3 = 2740 KJ/Mole
Al3+ Al4+ + e– IE4 = 11,600 KJ/Mole (a) Which one of the above four ions has the greatest electron
affinity. Explain. (b) Arrange the above four aluminium ions in the increasing order of their Atomic-size.
(c) Explain the large increase in Ionization Energy between I3 and I4