Question

what is a secondary quantum number?

Answer 1

The second quantum number, ℓ, is the quantum number associated with the angular momentum of an atomic electron. The second quantum number determines the shape of the electron's orbital.

Answer 2

The electron's energy sublevel or kind of orbital is represented by the secondary quantum number (l). The secondary quantum number is denoted by (l). In order for l to equal 0, 1,..., n-1, the value of l depends on the value of n. This number is also known as azimuthal or subsidiary in some contexts.

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