A burst of energy as particles or waves emitted during decay is called

• A. Radioactivity
• B. Isotopes
• C. Radiation
• D. Activation

Answer: (C)

Radiation is the energy released in the form of particles or electromagnetic waves when a nucleus decays. This energy can show up as alpha or beta particles or gamma rays, representing the burst emitted during decay. The term describes the energy itself. In contrast, radioactivity is the property of a substance to undergo radioactive decay, isotopes are different forms of an element with the same number of protons but different neutrons, and activation is the process that makes materials radioactive after exposure. So the burst of energy described here is best named radiation.