radioactive (Nave, 2014) Info about radiation; alpha and beta particles, etc alpha particles Alpha Barrier Penetration Alpha Barrier Penetration alpha Alpha Barrier Penetration (Nave, 2014) http://hyperphysics.phy-astr.gsu.edu... Georgia State University Hyperphysics: radioactividad far to heavy to be stable (Nave, 2014) Radioactivity Alpha Barrier Penetration far to heavy to be stable far to heavy to be stable (Nave, 2014) Alpha Barrier Penetration Alpha Barrier Penetration alpha particles radioactive Radioactivity - Hyperphysics alpha particles alpha particles Learn More »