In chemistry, the term "alpha" commonly refers to the first letter of the Greek alphabet, and it's often used to designate various concepts. One significant use is in radioactivity, where "alpha decay" refers to the emission of an alpha particle from the nucleus of an atom. An alpha particle consists of two protons and two neutrons, essentially a helium-4 nucleus. This type of radioactive decay is characterized by the emission of relatively high-energy particles and is often associated with heavy elements undergoing nuclear transmutation.
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