Question

as the 1890s, jj thomson applied a strong voltage of electricity to a collection of identical atoms. a ray appeared that was attracted to a positive magnet but repelled by a negative magnet. the collection of atoms lost a very small amount of mass after the ray appeared. based on the characteristic of the ray and the effect on the mass of the atoms, what subatomic particle was most likely composing the ray? proton neutron electron mu

Explanation:

Electrons are negatively - charged particles. A ray attracted to a positive magnet and repelled by a negative magnet indicates it is negatively - charged. Also, electrons have a very small mass compared to protons and neutrons, which is consistent with the description of a very small mass loss from atoms. Protons are positively - charged, neutrons are neutral, and an 'amu' is a unit of mass, not a particle.

Answer:

B. Electron