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Sir, can you explain this figure? I cant understand.

Sir, can you explain this figure? I cant understand.

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Grade:11

1 Answers

Sunil Kumar FP
askIITians Faculty 183 Points
9 years ago
see the energy of sigma 2p and pi2p are very close to each other.The electronic configuration from oxygen to neon are as follows
-----@2px pi2py pi*2py sigma 2px
pi2pz pi*2pz
for for lighter element boron.carbon and nitrogen the energy order is
---- pi2py @2px @*2px pi*2py
pi2pz pi*2pz
as @2p and pi2p are very close in energy therfore the electronic configuration of B,C and N are with 2s-2p mixing and in this process energy of pi2p is lowered as compared to sigma 2p.where as there is no such issue in case of oxygen,fluorine and neon
Rest I think allshould be clear.If any doubt please feel free to ask further

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