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- 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 radiation
- Radioactivity: Definition, Types, Formula, and Applications
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 the form of radiation This radiation can be emitted as particles or electromagnetic waves, depending on the nature of the decay
- 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 shift to a more stable configuration
- Radioactivity and the Types of Radioactive Decay
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, but there are other nuclear reactions responsible for radioactivity
- The Radioactive Atom: An Overview | Radiation and Your Health | CDC
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 we are left with a different element that is more stable
- What Is Radioactivity? (with pictures) - AllTheScience
Radioactivity is the process whereby unstable atomic nuclei release energetic subatomic particles or electromagnetic radiation (EMR) This phenomenon can cause one element to turn into another and is partly responsible for the heat of the Earth’s core
- Radiation Basics | Nuclear Regulatory Commission
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 spontaneous emission is what we call radiation
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