In our discussion of bonding, we have not encountered a bond order higher than triple. Use the energy level diagrams of Figure 11-26 to show why this is to be expected.

Figure 11-26

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820 кар, кар 020 2p p 025 025 Bond order Magnetism ++ Li₂ 1 Diamagnetic 020 p p p. p 020 025 025 Bond order Magnetism N |tt| Be₂ 0 N th 44 ++ |N| B₂ C₂ 1 2 Paramagnetic Diamagnetic +4 ++ N 0₂ 2 Paramagnetic Diamagnetic ++ F₂ 14 N 14 O 14 N₂ 3 Diamagnetic