Identify the steps that are expected to be exothermic in the Born–Haber cycle for the formation of MgBr₂.

• A. Br(g) + e^-(g) → Br^- and Br₂(g) → 2 Br(g)
• B. Br₂(g) → 2 Br(g) and Mg²⁺(g) + 2 Br^-(g) → MgBr₂(s)
• C. Br(g) + e^-(g) → Br^- and Br₂(l) → Br₂(g)
• D. Br₂(l) → Br₂(g) and Mg(g) → Mg²⁺(g) + 2 e^-
• E. Br(g) + e^-(g) → Br^- and Mg²⁺(g) + 2 Br^-(g) → MgBr₂(s)

Answer: (E)