Oct 24, 2025 · Radioactivity, property exhibited by certain types of matter of emitting energy and subatomic particles spontaneously. It is, in essence, an attribute of individual atomic nuclei.

Radioactive decay (also known as nuclear decay, radioactivity, radioactive disintegration, or nuclear disintegration) is the process by which an unstable atomic nucleus loses energy by …

As its name implies, radioactivity is the act of emitting radiation spontaneously. This is done by an atomic nucleus that, for some reason, is unstable; it "wants" to give up some energy in order to …

Jun 10, 2025 · Radioactivity occurs when an atom has an excess of energy, mass, or both, making its nucleus unstable. To reach a lower, more stable energy level, it releases energy in …

May 30, 2021 · Radioactivity is the spontaneous emission of ionizing radiation from nuclear decay and reactions. The three main types of radioactive decay are alpha, beta, and gamma decay, …

Feb 22, 2024 · This process is known as radioactivity and the energy that's released is radiation. After an atom expels energy from the nucleus, the composition of the nucleus changes, and …

These forces within the atom work toward a strong, stable balance by getting rid of excess atomic energy (radioactivity). In that process, unstable nuclei may emit a quantity of energy, and this …

Radioactivity can also be referred to as radioactive decay or nuclear decay. The most common forms of radiation include alpha, beta, and gamma radiation, but other types of radioactive …

May 29, 2024 · Radioactivity is a natural phenomenon involving the decay of unstable atomic nuclei, which release energy in the form of radiation. This process helps us understand atomic …

Graphic showing relationships between radioactivity and detected ionizing radiation Ionizing radiation has many practical uses in medicine, research, and construction, but presents a …