Beta decay is a type of radioactive decay in which a beta particle (either an electron or a positron) is emitted from the nucleus of an atom.
Alpha decay is another type of radioactive decay in which an alpha particle (two protons and two neutrons) is emitted from the nucleus.
Gamma decay is a type of radioactive decay that involves the emission of gamma rays, which are high-energy photons.
Half-Life: Half-life refers to the time it takes for half of the radioactive atoms in a sample to undergo radioactive decay.