MDCAT Chemistry MCQ #995

Why do photochemical reactions often proceed through excited-state mechanisms?

MDCAT Chemistry MCQ #995

  1. Question 1

    Q1. Why do photochemical reactions often proceed through excited-state mechanisms?

    • A) Excited electrons have higher kinetic energy
    • B) Electron configuration in excited states allows forbidden transitions
    • C) The Pauli Exclusion Principle is temporarily suspended
    • D) Excited states reduce the activation energy path

    Answer: Electron configuration in excited states allows forbidden transitions

    Explanation: Excited configurations bypass orbital restrictions. Energy and activation paths are affected but not primary factors.