Arrange the elements in each of the following groups in order of increasing ionization energy:
(a) Li, Na, KOrder: K < Na < Li.Ionization energy decreases as you move down the group because atomic size increases, and the outermost electron is farther from the nucleus, experiencing less attraction. (b) Cl, Br, IOrder: I < Br < Cl.Ionization energy decreases as you go down the group because the atomic size increases, … Read more