When an atom is placed in an external magnetic field, the magnetic quantum number 'm' specifically describes which property of the electron's orbital?
Q1. When an atom is placed in an external magnetic field, the magnetic quantum number 'm' specifically describes which property of the electron's orbital?
Answer: Orientation of the orbital
Explanation: The magnetic quantum number (m) describes orbital orientation; the azimuthal quantum number (l) determines the shape of the orbital.