Which of the following has the smallest radius? A) K^+ B) Ar C) CI^- D) S^2- E) Rb^+ Which of the following ionic compounds has the largest lattice energy (i.e.. the lattice energy most favorable to a stable lattice? A) BaS B) NaBr C) BaO D) Csl E) BeO Which of the following statements concerning lattice energy is false? A) The lattice energy for a solid with 2+ and 2- ions should be two times that for a solid with 1- and 1- ions. B) MgO has a larger lattice energy than NaF. C) MgO has a larger lattice energy than LiF. D) It is often defined as the energy released when an ionic solid forms from its ions. E) All of these are true.