A nucleus in an atom which we have been used to thinking does not exist. Crystal helium atom acts as a seed during the crystallization of atoms of chemical elements. Atom of any element of the periodic system is a close-packed crystal built from hydrogen and its isotopes. Hydrogen atom is an electric dipole consisting of a proton and an electron; hydrogen atom is an elementary magnet; hydrogen atom is a free valent dipole. The periodic table of development of chemical elements atoms structures is proposed.