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Что (кто) такое free radical - определение
Free radical (disambiguation)
WIKIMEDIA DISAMBIGUATION PAGE
Free Radical; Free-radical (disambiguation)
A free radical is an atomic or molecular species with unpaired electrons on an otherwise open shell configuration.
free radical
![[[Moses Gomberg]] (1866–1947), the founder of radical chemistry](https://commons.wikimedia.org/wiki/Special:FilePath/Gombergm01.jpg?width=200 "[[Moses Gomberg]] (1866–1947), the founder of radical chemistry")
![hydroxyl radical]]](https://commons.wikimedia.org/wiki/Special:FilePath/HydroxideVsHydroxyl.png?width=200 "hydroxyl radical]]")
![''N''-hydroxypiperidine]]](https://commons.wikimedia.org/wiki/Special:FilePath/N-hydroxypiperidine Radical Form.svg?width=200 "''N''-hydroxypiperidine]]")
![Spectrum of the blue flame from a [[butane]] torch showing excited molecular radical band emission and [[Swan bands]]](https://commons.wikimedia.org/wiki/Special:FilePath/Spectrum of blue flame.png?width=200 "Spectrum of the blue flame from a [[butane]] torch showing excited molecular radical band emission and [[Swan bands]]")
ATOM, MOLECULE, OR ION THAT HAS AN UNPAIRED VALENCE ELECTRON; TYPICALLY HIGHLY REACTIVE
Radical (Chemistry II); Oxygen radicals; Free-radical; Organic radical; Free radicals; Oxygen radical; Radical (Chemistry); Free Radicals; Single electron transfer; Oxygen free radicals; Radical reaction; Free radical; Persistent radical; Chemical radical; Termination (chemistry); One-electron reductant; Chlorine Radical; Radical chemistry; Stable radical; Single-electron transfer; Radical reactions
¦ noun Chemistry an uncharged molecule (typically highly reactive) having an unpaired valency electron.
free radical
ATOM, MOLECULE, OR ION THAT HAS AN UNPAIRED VALENCE ELECTRON; TYPICALLY HIGHLY REACTIVE
Radical (Chemistry II); Oxygen radicals; Free-radical; Organic radical; Free radicals; Oxygen radical; Radical (Chemistry); Free Radicals; Single electron transfer; Oxygen free radicals; Radical reaction; Free radical; Persistent radical; Chemical radical; Termination (chemistry); One-electron reductant; Chlorine Radical; Radical chemistry; Stable radical; Single-electron transfer; Radical reactions
(free radicals)
Free radicals are atoms that contain one or more unpaired electrons. Free radicals are believed to be a cause of ageing, heart disease, and some cancers. (TECHNICAL)
N-COUNT: usu pl
Примеры употребления для free radical
1. The scientists measured the presence in skin of free radical chemicals, which are associated with damage to DNA and cancer.
2. I had acid reflux later on." 0/10 Expert‘s verdict: "Extract of cactus is rich in antioxidants that can neutralise damage caused by free radical cells.
3. Scientists at the University of Kansas found that it contains antioxidants – cells that mop up and destroy free radical cancer causing cells in the body.
4. The latest study, soon to be published in the journal Free Radical Biology Medicine, investigated the production of harmful reactive oxygen species (ROS) by the use of sunscreens.
5. On May 8, Johnston‘s purported kidnappers posted a video calling on the British government to free radical cleric Abu Qatada –– known as Osama bin Laden‘s "spiritual ambassador in Europe" –– in exchange for the journalist.