Which of the following species is a stronger nucleophile in a polar protic solvent?
a. F⁻ or I⁻b. F⁻ or Cl⁻

• A. a. F⁻
  b. Cl⁻
• B. a. I⁻
  b. F⁻
• C. a. I⁻
  b. Cl⁻
• D. a. F⁻
  b. F⁻

Answer: (C)