For the n = 2 quantum level, the possible values of l are 0 and 1, and the possible values of ml are 0 and ±1.
In the context of quantum mechanics and the description of electrons in an atom, the quantum numbers n, l, and ml provide information about the energy level, angular momentum, and magnetic orientation, respectively.
For an electron in the n=2 quantum level, the principal quantum number (n) is 2, indicating it is in the second energy level. The angular momentum quantum number (l) represents the shape of the orbital and can take values from 0 to n−1. Therefore, for n=2, l can be 0 or 1.
The magnetic quantum number (ml) describes the orientation of the orbital in space and can take integer values from −l to l. For l=0, ml can only be 0. For l=1, ml can be -1, 0, or 1.
Hence, for an electron in the n=2 quantum level, the possible values are l=0,1 and ml=0,±1. This information helps define the specific orbital in which the electron is located within the second energy level of the atom.