If I want to name a spin state with 12 unpaired electrons, what is the correct name? Tredecim is the latin name for thirteen, but tredecimet sounds odd.


2 Answers 2


I have seen multiplicity 13 referred to as simply a 13-let. This #-let nomenclature is sometimes used for high multiplicities (e.g. higher than 10).


I would go for the Greek form and call it trisdecatet. Or should it be with a k, trisdekatet?

  • 1
    $\begingroup$ All other spin states use latin for their name. This would be very inconsistent. $\endgroup$
    – mcocdawc
    Jul 17, 2017 at 15:56

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