elektronitason
An elektronitason, often translated as electron shell or energy level, refers to a region around the nucleus of an atom where electrons are most likely to be found. These regions are not fixed orbits but rather probability distributions described by quantum mechanics. Electrons within the same elektronitason possess similar energy levels.
The elektronitason are designated by principal quantum numbers, represented by integers starting from 1 (n=1, n=2,
Within each principal elektronitason, there can be subshells, denoted by azimuthal quantum numbers (l=0, 1, 2, ...