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Gamma ray is a type of radiation that has no mass & no charge. Gamma rays have a high penetrating power. Text us. Tags: gamma ray, radiation, mass. Wednesday, February 01 2012.
Atoms, Molecules, and Ions Radioactivity â¢ Three types of radiation were discovered by Ernest Rutherford: (memorize the 3 types of particle) ! Î± particles, attracted to negative electrode, so they have a positive charge, much more mass than negative stuff (turn out to be He nuclei) ! Î² particles, attracted to positive electrode, so