MDCAT Chemistry MCQ #913

What differentiates the magnetic quantum number (m_l) from the spin quantum number (m_s)?

MDCAT Chemistry MCQ #913

  1. Question 1

    Q1. What differentiates the magnetic quantum number (m_l) from the spin quantum number (m_s)?

    • A) m_l determines orbital orientation, m_s determines electron spin direction
    • B) m_l is always positive, m_s is always negative
    • C) m_l applies to protons, m_s to electrons
    • D) m_l is energy-related, m_s is mass-related

    Answer: m_l determines orbital orientation, m_s determines electron spin direction

    Explanation: m_l defines spatial orientation; m_s is ±½ for spin. Options B and D misrepresent the quantum numbers' roles.