MDCAT Chemistry MCQ #979

Which atomic structure property most directly affects the energy required to break a covalent bond in a reaction's rate-determining step?

MDCAT Chemistry MCQ #979

  1. Question 1

    Q1. Which atomic structure property most directly affects the energy required to break a covalent bond in a reaction's rate-determining step?

    • A) Electron configuration of the bonding atoms
    • B) Atomic radius of the central atom
    • C) Number of neutrons in the isotope
    • D) Spin quantum number of unpaired electrons

    Answer: Electron configuration of the bonding atoms

    Explanation: Electron configuration determines bond strength and energy. Atomic radius and spin quantum number influence geometry but not directly bond energy.