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

A) principle quantum number (n)
B) magnetic quantum number (ml)
C) spin quantum number (ms)
D) Schrodinger quantum number (S)
E) (azithmal) angular momentum quantum number (l)

2 answers

The azimuthal quantum number.
Which one of the quantum numbers describes shape of an orbital?

Principal quantum number
Azimuthal quantum number
Magnetic quantum number
Spin quantum number