Question

Which one of the quantum numbers describes shape of an orbital?

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

Answer 1

The correct option is B Azimuthal quantum number

Principal quantum number represents the principal energy shell where the electron is revolving.

Azimuthal quantum number ($l$) describes the shape of an orbital.

Magnetic quantum number describes the orientation of the orbital in space.