Leibniz, G. Wilhelm (1646-1716) said that "*complex numbers are a fine and
wonderful refuge of the divine spirit, as if it were an amphibian of existence
and non-existence.*" In science, imaginary numbers were and still are the great
mystery. This fact leads to serious consequences in some cases. In particular,
in order to get rid of the imaginary part, Born in 1926 proposed the well-known
probabilistic interpretation of the complex wave
Y-function.
Since then, quantum mechanics (QM) loudly asserts that the physical sense has
only the modulus squared of Schrödinger's wave function

This step caused a series of problems at the description of energetic
structure (spectra) of atoms and gave rise to quantum electrodynamics (QED),
which all time struggles against infinities. The QM formalism is also unable to
describe directly the spatial structure of atomic spaces, etc.

With regard to
the *binary* structure of properties, we arrived at the
*Periodic Law* of atomic
structures posted here. Thus, the Mendeleyev' Periodic Table is revealed
now from the new point of view.