MDCAT Chemistry MCQ #643

Based on the bond energy values provided in the textbook, what is the correct decreasing order of reactivity for alkyl halides?

MDCAT Chemistry MCQ #643

  1. Question 1

    Q1. Based on the bond energy values provided in the textbook, what is the correct decreasing order of reactivity for alkyl halides?

    • A) R-I > R-Br > R-Cl > R-F
    • B) R-F > R-Cl > R-Br > R-I
    • C) R-Cl > R-Br > R-I > R-F
    • D) R-I > R-F > R-Cl > R-Br

    Answer: R-I > R-Br > R-Cl > R-F

    Explanation: Iodoalkanes are most reactive due to the weakest C-X bond; fluoroalkanes are wrong because they have the highest bond dissociation energy.