What is emitted during a gamma emission?

During gamma emission, gamma rays are emitted as a form of electromagnetic radiation. Gamma rays are high-energy photons, which are a type of particle associated with the electromagnetic spectrum. This process typically follows radioactive decay, where an unstable nucleus releases energy to reach a more stable state. The emission of gamma rays occurs without the presence of mass or charge, distinguishing them from other forms of radiation.

Alpha and beta particles are forms of particulate radiation. Alpha particles consist of two protons and two neutrons, while beta particles are high-energy, high-speed electrons or positrons emitted from a nucleus. X-rays are also a form of electromagnetic radiation but are produced by interactions involving electrons rather than from nuclear transitions that generate gamma radiation. This fundamental distinction clarifies why gamma rays are the correct answer when discussing what is emitted during gamma emission.