
Radioactivity | Definition, Types, Applications, & Facts | Britannica
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 - Wikipedia
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 …
Radioactivity: Definition, Types, Formula, and Applications
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 …
What Is Radioactivity? - Energy.gov
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 …
What Is Radioactivity? (with pictures) - AllTheScience
May 21, 2024 · Radioactivity is the process whereby unstable atomic nuclei release energetic subatomic particles or electromagnetic radiation (EMR). This phenomenon can cause one …
Radioactivity and the Types of Radioactive Decay
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, …
Radioactivity: [Causes + Types + Properties - Science4Fun
Radioactivity is a natural phenomenon in which atoms of Elements that have unstable nuclei (nuclei = plural of nucleus), disintegrate for getting stability. There are 3 main reasons behind …
What is Radioactivity? - BYJU'S
What is Radioactivity? Due to nuclear instability, an atom’s nucleus exhibits the phenomenon of Radioactivity. Energy is lost due to radiation that is emitted out of the unstable nucleus of an …
Radioactivity | Radiology Reference Article | Radiopaedia.org
Sep 12, 2024 · Radioactivity, also known as radioactive decay, describes the process of spontaneous breakdown of unstable (or radioactive) nuclides, with the formation of daughter …
The Science Behind Radioactive Elements
This article will take you through the depths of atomic structure, the mechanics of radioactivity, the different types of decay, the history of its discovery, the technological and medical …