Which of the following processes is exothermic? A) Cl₂(g) → 2Cl(g) B) Br(g) + e⁻ → Br⁻(g) C) Li(s) → Li(g) D) NaF(s) → Na⁺(g) + F⁻(g) E) None of the above processes is exothermic.

Question

Quizplus · Accepted Answer

The process B) Br(g) + e⁻ → Br⁻(g) is exothermic because it involves the release of energy when an electron is added to a bromine atom to form a bromide ion, which is known as electron affinity.

Which of the Following Processes Is Exothermic