Question

orgel diagram applicable for​

Answer 1

Orgel diagrams only show the symmetry states of the highest spin multiplicity instead  of all possible terms, unlike a Tanabe-Sugano diagram. Orgel diagrams will, however, show the number of spin allowed transitions, along with their respective symmetry  designations.

Answer 2

orgel diagrams are applicable for the relative energies of electronic terms in transition metal complexes.