Determining electron configuration with quantum numbers n l

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rwooduk
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This relates to a question I asked recently on Quantum Dots, but I'll rephrase it and hopefully any chemists out there can help.

If we have (n,l) = (1,2) where n and l are quantum numbers can we determine the orbitals? and hence the number of electrons in a quantum dot?

i.e.
lrq3kH2.jpg


And also I've always used the SSPSP... to fill orbitals, what's happened to the second S etc? why does he go SPDSF

Thanks in advance for any help, completely lost.
 
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No idea what is going on. Symbols look to me as if he was writing about terms, not orbitals. Not that it makes sense to me with terms.