  The physical model describing the influence of the electronic subsystem on
the properties of one-dimensional chains of metal is presented. It is shown
that depending on an interaction potential between atoms in one-dimensional
system formation of chains of various length is possible. In case the
characteristic depth of the potential well of the interatomic interaction does
not exceed a certain magnitude, the chains in 1D system are formed with length
of several angstroms, while the increase the depth of the well also leads to
the possibility of formation of metal chains of greater length.
