  The masses of elementary particles and hadrons can be calculated from the
periodic table of elementary particles. The periodic table is derived from
dimensional hierarchy for the seven extra spatial dimensions. As a molecule is
the composite of atoms with chemical bonds, a hadron is the composite of
elementary particles with hadronic bonds. The masses of elementary particles
and hadrons can be calculated using the periodic table with only four known
constants: the number of the extra spatial dimensions in the superstring, the
mass of electron, the mass of Z=B0, and the fine structure constant. The
calculated masses are in good agreement with the observed values. For examples,
the calculated masses for the top quark, neutron, and pion are 176.5 GeV,
939.54MeV, and 135.01MeV in excellent agreement with the observed masses, 176
=B1 13 GeV, 939.57 MeV, and 134.98 MeV, respectively. The masses of 110 hadrons
are calculated. The overall average difference between the calculated masses
and the observed masses for all hadrons is 0.29 MeV. The periodic table of
elementary particles provides the most comprehensive explanation and
calculation for the masses of elementary particles and hadrons.
