## term symbols

https://doi.org/10.1351/goldbook.T06277
Symbols characterizing the states of atoms and molecules in terms of multiplicity, symmetry of the total electronic wavefunction, and sometimes total (orbital + spin) @[email protected] Examples: $$^{2}\text{P}_{1/2}$$ denotes an atomic state of multiplicity 2 (doublet), electron orbital @[email protected] quantum number $$L=1$$, and orbital plus spin @[email protected] quantum number $$J=\frac{1}{2}$$.
Source:
Green Book, 2nd ed., p. 28 [Terms] [Book]