Uranium-235 decays into thorium-231 by emitting an alpha

Last updated: 8/8/2022

Uranium-235 decays into thorium-231 by emitting an alpha particle. This process releases energy. Where does the energy come from? Select one: O The total mass of thorium-231 and an alpha particle is slightly less than the mass of uranium-. 235. This mass difference becomes energy. O Thorium-231 plus an alpha particle has four more protons than uranium-235. This proton difference becomes energy. O The mass of uranium-235 is slightly less than the total mass of thorium-231 and an alpha particle. This mass difference becomes energy. O Uranium-235 has four more protons than thorium- 231 plus an alpha particle. This proton difference becomes energy.