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Radioactivity | Definition, Types, Applications, & Facts
https://www.britannica.com/science/radioactivity
WEBMar 29, 2024 · 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. An unstable nucleus will decompose spontaneously, or decay, into a more stable configuration but will do so only in a few specific ways by emitting certain particles ...
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What Are the Radioactive Elements? - Science Notes and Projects
https://sciencenotes.org/what-are-the-radioactive-elements/
WEBSep 9, 2019 · What Are the Radioactive Elements? This entry was posted on September 9, 2019 by Todd Helmenstine (updated on March 9, 2024) This is a list of the radioactive elements of the periodic table. While all elements have some radioactive isotopes, these 37 elements have no stable isotopes.
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Radioactive isotope | Description, Uses, & Examples | Britannica
https://www.britannica.com/science/radioactive-isotope
WEBA radioactive isotope, also known as a radioisotope, radionuclide, or radioactive nuclide, is any of several species of the same chemical element with different masses whose nuclei are unstable and dissipate excess energy by spontaneously emitting radiation in the form of alpha, beta, and gamma rays. Every chemical element has one or more ...
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Radioactivity Definition in Science - ThoughtCo
https://www.thoughtco.com/definition-of-radioactivity-606338
WEBSep 6, 2019 · Radioactivity is the process by which an unstable atomic nucleus loses energy by emitting radiation. While radioactivity results in the release of radiation, not all radiation is produced by radioactive material. The SI unit of radioactivity is the becquerel (Bq). Other units include the curie, gray, and sievert.
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Radioactive Element - an overview | ScienceDirect Topics
https://www.sciencedirect.com/topics/chemistry/radioactive-element
WEBRadioactivity is an atomic property due to reactions taking place in the atomic nucleus, which in certain isotopes of a number of elements is unstable and disintegrates with the production of radiation and usually of an atom or atoms of other elements.
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DOE Explains...Radioactivity | Department of Energy
https://www.energy.gov/science/doe-explainsradioactivity
WEBRadioactive nuclei are nuclei that are unstable and that decay by emitting energetic particles such as photons, electrons, neutrinos, protons, neutrons, or alphas (two protons and two neutrons bound together). Some of these particles are known as ionizing particles. These are particles with enough energy to knock electrons off atoms or molecules.
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What Is Radioactivity: Simple Definition, Explanation And ... - Science …
https://www.scienceabc.com/pure-sciences/what-is-radioactivity-simple-definition-types-example-decay.html
WEBOct 19, 2023 · Radioactive decay is a nucleus’ journey to attaining stability via emission of highly energetic radiation and subatomic particles. This phenomenon is called radioactivity. Our brain’s response to the word “radioactivity” often veers into the world of superheroes—swinging across the city, turning into a human fireball, or …
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Explainer: Radiation and radioactive decay - Science News Explores
https://www.snexplores.org/article/explainer-radiation-radioactive-decay-chemistry-isotopes
WEBJan 10, 2023 · By Janet Raloff and Trisha Muro. January 10, 2023 at 6:30 am. Chemical elements can take several related forms, known as isotopes. Some of these forms are unstable, also known as radioactive isotopes. But they don’t want to be unstable. So they morph by shedding one or more subatomic particles.
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Radioactivity – Introductory Chemistry
https://uen.pressbooks.pub/introductorychemistry/chapter/radioactivity/
WEBKey Terms. radioactivity: Spontaneous emission of ionizing radiation as a consequence of a nuclear reaction, or directly from the breakdown of an unstable nucleus. decay: To change by undergoing fission, by emitting radiation, or by capturing or losing one or more electrons. Becquerel’s Pitchblende.
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11.1: Radioactivity - Chemistry LibreTexts
https://chem.libretexts.org/Bookshelves/Introductory_Chemistry/Basics_of_General_Organic_and_Biological_Chemistry_(Ball_et_al.)/11%3A_Nuclear_Chemistry/11.01%3A_Radioactivity
WEBAug 13, 2022 · 11: Nuclear Chemistry. 11.1: Radioactivity. Page ID. Anonymous. LibreTexts. Learning Objectives. To define and give examples of the major types of radioactivity. Atoms are composed of subatomic particles—protons, neutrons, and electrons.
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