“…According to our research 27 the magic numbers 2, 8, 20, 28, 50, 82 and 126 are related to the special shapes of very stable arrangements in widely different groups. For example, 4 He belongs to the group of a two-dimensional structure, while 16 0 belongs to the group of parallelepipeds. In the shell structure of the tetragonal system we observe the magic nuclei 40 Ca, 48 Ca and 64 Ni , while the magic nuclei 88 Sr and 208 Pb belong to another group of orthorhombic systems.…”