e键

the uncluttered
p-orbit of a key atom, a co-priced key formed by parallel, side overlapping, π key. π key is formed by the two p-tracks overlapping from the side, the degree of overlap is smaller than the σ key, so π key is not as stable σ the key. When the two π that form the key rotate relatively on the axis between the nucleus, the overlap of the p-orbits is reduced and eventually the π of the keys is broken.








According to molecular orbit theory, the linear combination of
two atoms and p orbits can form two molecular orbits. The energy is lower than the original atomic orbit of the bonded orbit π and the energy is higher than the original atomic orbit of the anti-key orbit π, the corresponding keys are called
π key and πkey respectively. At the base state, two
p electrons (π electrons) are in a bonded orbit, which leaves the anti-key orbit empty. A diagram of the molecular orbits of the atomic orbits of oxygen and carbon atoms to form carbon monoxide molecules is as follows: