# Deriving term symbols from electron configuration using Young tableaux

Can somebody explain me how to derive all term symbols using Young tableaux? Our lecturer showed us but I couldn't quite understand it without any background on group theory. I have some vague algorithm that goes like this:

Given: Configuration $nl^k$

1. Construct all possible tables of $k$ with two rows where the first row $\le2l+1$ and the second shorter or equal to the first row.
2. Make a symmetrization of rows and antisymmetrization of columns.
3. Leave only a linear independent combinations.
4. Calculate $S_z$ for all these permutations.
5. Gather all $S_z$ to make $S$.
6. Transpose the tables to calculate $L$ the same way.

There was a demonstration for $2p^2$ but I still can't understand how to do it for more complicated configurations. Can somebody show how to proceed with $3d^4$ for example?

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