Answer:
The ranking of orbital radii from smallest to largest is Z, Y, X.
Step-by-step explanation:
Magnetic force is always perpendicular to the velocity by Fleming's right hand rule.a charged particle will be bent into a circular path by the component of magnetic field which is perpendicular to the velocity.
Particle X will be helical as it is parallel to the force and thus, uncharged by it and farthest away in orbit. Y is perpendicular to the force, whilst Z is perpendicular to X and the force.