Which of the following processes is exothermic? A) Br₂(g) → 2Br(g) B) F(g) + e⁻ → F⁻(g) C) Li(g) → Li(g) D) KI(g) → K⁺(g) + I⁻(g) E) None of the above is exothermic.

Question

Quizplus · Accepted Answer

The process of an atom gaining an electron (electron affinity) releases energy, making it exothermic. In choice B, a fluorine atom gains an electron to form a fluoride ion, which is an exothermic process.

Which of the Following Processes Is Exothermic