Electron orbital levels

Given the valence electron orbital level diagram and the description, identify the element or ion. 

Za,b = integrals are retained. In the INDO approach, the values of these single-atom integrals are determined by requiring the results of the calculation, performed at the Fock-like orbital level, to agree with results of ab initio Fock-level calculations. In the MINDO approach, experimental electronic spectra of the particular atom are used to... 

In this chapter, we focus on electron arrangements in atoms, paying particular attention to the relative energies of different electrons (energy levels) and their spatial locations (orbitals). Specifically, we consider the nature of the energy levels and orbitals available to—... 

Figure 11-13. HOMO and LUMO orbitals are shown for several 2P derivatives, where X means electron-donating group (here it is amino), and Z means electron-withdrawing group (here it is nitrosyl). Orbital levels are relative and qualitative. MRCI Sj (it it ) energies are shown at bottom, in eV. (From Ref. [144])...

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