Ligand group orbital approach linear molecules

Fig. 4.11 Application of the ligand group orbital (LGO) approach to construct a qualitative MO diagram for the formation of a linear XH2 molecule from the interactions of the valence orbitals of X (2s and 2p atomic orbitals) and an H—H fragment. For clarity, the lines marking the 2p orbital energies are drawn apart, although these atomic orbitals are actually degenerate.

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