Nothing prohibits to give a definition of the multiplicity of bond:
the multiplicity of bond is the energy of bond expressed in dimensionless units.
Hückel rule (4n + 2) for aromatic systems can be written in a different form, in the
form of 2n where n - unpaired number. So, we have: 2, 6, 10, 14, 18, etc. This is
also true for the electron shells in the atom and aromatic systems. The principle of
the interaction of fermions always one, everywhere.
An attempt was made to explain the mechanism of interaction of particles in an entangled quantum state on the basis of a new model of the Interfering Universe. p. 5: http://vixra.org/pdf/1606.0150v1.