MDCAT Chemistry MCQ #877

Which quantum number determines an electron's spin direction?

MDCAT Chemistry MCQ #877

  1. Question 1

    Q1. Which quantum number determines an electron's spin direction?

    • A) Principal quantum number
    • B) Azimuthal quantum number
    • C) Magnetic quantum number
    • D) Spin quantum number

    Answer: Spin quantum number

    Explanation: Spin quantum number (+½/-½) defines spin direction. Magnetic quantum number (C) defines orbital orientation.