Compare Figs. 14.38 and 14.40. Why are they different? Because B2 is known to be paramagnetic, the p2p and s2p MOs must be switched from our first prediction. What is the rationale for this? Why might one expect the s2p to be lower in energy than the p2p? Why can’t we use diatomic oxygen to help us decide whether the s2p or is lower in energy?

 Fig. 14.38 

 Fig. 14.40

Transcribed Image Text:

E B atom 2p+ 2s B₂ molecule TV2P TUZP # # # #1 TV2P TU2p 1 I 1 020 B atom 025 -2p #2s