MDCAT Chemistry MCQ #565

When comparing the physical properties of various alkyl halides with the same alkyl group, what is the correct descending order of boiling points?

MDCAT Chemistry MCQ #565

  1. Question 1

    Q1. When comparing the physical properties of various alkyl halides with the same alkyl group, what is the correct descending order of boiling points?

    • A) RI > RBr > RCl > RF
    • B) RF > RCl > RBr > RI
    • C) RCl > RBr > RF > RI
    • D) RI > RF > RBr > RCl

    Answer: RI > RBr > RCl > RF

    Explanation: Boiling points increase with molecular size and polarizability of the halogen. RF is tempting due to electronegativity but has the smallest electron cloud.