Also known as orbital angular momentum quantum number, orbital quantum number, second quantum number
quantum number for an atomic orbital that determines its orbital angular momentum and describes the shape of the orbital, and is symbolized as ℓ
The atomic orbital wavefunctions of a hydrogen atom: The azimuthal quantum number (ℓ) is denoted by letter at the top of each column. The principal quantum number (n) is shown at the right of each row.
In quantum mechanics, the azimuthal quantum number ℓ is a quantum number for an atomic orbital that determines its orbital angular momentum and describes aspects of the angular shape of the orbital. The azimuthal quantum number is the second of a set of quantum numbers that describe the unique quantum state of an electron (the others being the principal quantum number n, the magnetic quantum number mℓ, and the spin quantum number ms).
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