CONCLUSION.
By example of benzene molecule is shown that the principle of quantum superposition, and hence the quantum mechanics in general is in insurmountable conflict with the resonance theory. And so the assumption is that real benzene molecule (resonance hybrid) that is a cross between a resonance structures is genius chemical assumption, though not strictly from the standpoint of quantum mechanics, but that made it possible to qualitatively and quantitatively describe the benzene molecule, which could not represent a single formula. This example clearly shows that in fundamental matters of chemistry did not reducible to physics, here there is a ”chemical” highlight. And yet, the same L. Pauling’s resonance theory literally changed the chemistry, had a profound influence on the minds of chemists (I’m not talking about the pedagogical impact of resonance theory), and for a long time is not a textbook on organic chemistry where there are no resonance theory. Nevertheless it should be noted that when complication of the molecule (pyridine, naphthalene, anthracene, and so on) quantitative calculations becomes difficult (for the correct calculation of naphthalene is necessary to consider of about 40 resonance structures) and therefore started to use the MO method.