fsubniveau
Fsubniveau, sometimes written f-sublevel or f-subshell, is the set of atomic orbitals with orbital angular momentum quantum number l = 3 in quantum mechanics. Within a given principal shell n, there are seven f orbitals corresponding to magnetic quantum numbers m_l = -3, -2, -1, 0, 1, 2, 3. Each orbital can accommodate two electrons with opposite spins, giving a maximum of 14 electrons for a single f-sublevel when it is present.
In atomic structure, f-sublevels are relatively narrow in energy and are highly shielded by inner electron
The presence of f-sublevels influences spectral and magnetic properties. Transitions involving f orbitals contribute to characteristic
Overall, the f-sublevel is a fundamental component of the electronic structure in heavier elements, associated with