  For a semisimple Lie algebra g the orbit method attempts to assign
representations of g to (coadjoint) orbits in g*. Orbital varieties are
particular Lagrangian subvarieties of such orbits leading to highest weight
representations of g. In sl(n) orbital varieties are described by Young
tableaux. In this paper we consider so called Richardson orbital varieties in
sl(n). A Richardson orbital variety is an orbital variety whose closure is a
standard nilradical. We show that in sl(n) a Richardson orbital variety closure
is a union of orbital varieties. We give a complete combinatorial description
of such closures in terms of Young tableaux.
  This is the second paper in the series of three papers devoted to a
combinatorial description of orbital variety closures in sl(n) in terms of
Young tableaux.
