1. The problem statement, all variables and given/known data An atom with an excited-state configuration 1s22s22p63s23p64s23d14p1 With residual electron-electron interactions are taken into account, this configuration splits into atomic terms. List these terms labelled by thier L and S quantum numbers 2. Relevant equations L=|l1-l2|, |l1-l2|+1,..., l1+l2-1, l1+l2 S=|s1-s2|, |s1-s2|+1,..., s1+s2-1, s1+s2 3. The attempt at a solution With 3d14p1open would give l1=2 s1=1/2 and l2=1 s1=1/2 Thus L = 1, 2 and 3 and S = 0 and 1. Which give the pairs (1,0) (1,1) (2,0) (2,1) (3,0) (3,1) Is this correct? If these are correct then I looked at the degeneracy of each of the terms above and total degenerate states would be 60. How can I confirm that this agrees with the number expected from the l and s quantum numbers of the two valence electrons in the configuration above?