MDCAT Chemistry MCQ #942

Which quantum number determines the orientation of an orbital in space?

MDCAT Chemistry MCQ #942

  1. Question 1

    Q1. Which quantum number determines the orientation of an orbital in space?

    • A) Principal quantum number (n)
    • B) Azimuthal quantum number (l)
    • C) Magnetic quantum number (m_l)
    • D) Spin quantum number (m_s)

    Answer: Magnetic quantum number (m_l)

    Explanation: The magnetic quantum number specifies orbital orientation. The azimuthal quantum number defines shape, not orientation.