* Neutrons have no net charge. Magnetic fields exert forces on moving charges. Since neutrons are electrically neutral, they don't experience a force from magnetic fields.
* Neutrons have a magnetic dipole moment. While neutrons are overall neutral, they have a small internal magnetic moment due to the movement of their constituent quarks. However, this magnetic moment is much weaker than the magnetic moment of charged particles like protons or electrons. The force from a magnetic field on this weak moment would be negligible.
Therefore, a neutron will not be deflected by a magnetic field in any significant way.
