Carbon chirality, periodic nuclear structure and polarization dynamics

This article examines a targeted problem encountered in the course of the analysis of the periodic structure of the atom: the apparent incompatibility between the structure emerging from that analysis and the chirality of tetravalent carbon. It puts forward three solutions requiring a single, simple premise: the pairing of atoms around carbon is not free, but imposes a two-by-two symmetry between the substituents. This premise thus meets the requirements of experimentally observed chirality (two strictly equivalent mirror forms), through three potential pairing orientations (the pseudo-tetrahedron, the quadripod, or the axial rotation). The article further offers a reflection on the mechanism of the symmetric rotation of the polarization plane, by assuming that the pairing deforms the carbon atom itself into two mirror versions, and that the photon's polarization plane is deflected in two mirror directions through its direct interaction with the carbon core. V2 adds Figure 1, text unchanged.