MDCAT Chemistry MCQ #921

Which pair of quantum numbers directly determines the shape of an orbital?

MDCAT Chemistry MCQ #921

  1. Question 1

    Q1. Which pair of quantum numbers directly determines the shape of an orbital?

    • A) Principal and azimuthal
    • B) Azimuthal and magnetic
    • C) Magnetic and spin
    • D) Principal and magnetic

    Answer: Azimuthal and magnetic

    Explanation: Azimuthal and magnetic quantum numbers define orbital shape (B). Principal quantum number (A) defines energy level size.