What quantum number(s) is(are) required to completely describe an orbital , the region in space in which an electron has a high probability of being found?
I. Principal quantum number
II. Angular Momentum quantum number
III. Magnetic quantum number

Question

Quizplus · Accepted Answer

All three quantum numbers are required to describe an orbital completely. The principal quantum number (n) gives information about the energy level and the size of the orbital. The angular momentum quantum number (l) gives information about the shape of the orbital. The magnetic quantum number (m) gives information about the orientation of the orbital in space. Therefore, to describe an orbital completely, all three quantum numbers are necessary.

What Quantum Number(s) Is(are) Required to Completely Describe an Orbital