MDCAT Chemistry MCQ #1742

Iodine is a solid at room temperature while Chlorine is a gas. This difference in physical state is caused by:

MDCAT Chemistry MCQ #1742

  1. Question 1

    Q1. Iodine is a solid at room temperature while Chlorine is a gas. This difference in physical state is caused by:

    • A) Differences in electronegativity values
    • B) Strength of London dispersion forces
    • C) Formation of permanent dipoles
    • D) Variations in ionic bond character

    Answer: Strength of London dispersion forces

    Explanation: Iodine's large size increases polarizability and London force strength. Option C fails because iodine is a non-polar molecule without permanent dipoles.