Which of the Following Rays Have the Heaviest Particles

Question

Which of the following rays have the heaviest particles? A) α rays B) β rays C) γ rays D) β⁺ rays

Accepted Answer

α rays have the heaviest particles, which are helium nuclei consisting of two protons and two neutrons. β rays are electrons or positrons, which are much lighter than helium nuclei. γ rays are photons, which have no mass. The option D is not a type of ray and is not relevant to the question.