Question

in the figure below, why are beta particles deflected more than alpha particles? beta particles have more energy than the alpha particles. beta particles are less massive than alpha particles. beta particles have a negative electric charge. beta particles have a larger electric charge than alpha particles.

Explanation:

When charged - particles move in a magnetic or electric field, their deflection depends on their mass - to - charge ratio. Beta particles (electrons) are much less massive than alpha particles (helium nuclei). According to the laws of electromagnetism, for a given force (due to the field), the acceleration (and thus deflection) of a particle is inversely proportional to its mass. Since beta particles are less massive, they are deflected more.

Answer:

Beta particles are less massive than alpha particles.