I can’t seem to find a definitive answer on what makes up the quantum numbers of a nucleus. I know that: n is an indexing number of l states or the number of sign changes in the wavefunction l represents the angular moment of a nucleon s represents the spin of a nucleon But I can not determine if j is a quantum number. I know vector j is made up two other vectors, e.g., j = l + s. I also know that the nuclear shell/subshell notation involves j. For example: 2d(3/2) where n = 2, l = d and j = (3/2) Any thoughts as to which one j is? Also is parity a quantum number too? I know it too is often used in the nuclear shell notation.