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2. Category:Free radicals - Wikipedia

   en.wikipedia.org/wiki/Category:Free_radicals

   Download as PDF; Printable version; ... This list may not reflect recent changes. Free radical; Radical (chemistry) *

3. Radical (chemistry) - Wikipedia

   en.wikipedia.org/wiki/Radical_(chemistry)

   Lewis dot structure of a Hydroxide ion compared to a hydroxyl radical. In chemistry, a radical, also known as a free radical, is an atom, molecule, or ion that has at least one unpaired valence electron. [1] [2] With some exceptions, these unpaired electrons make radicals highly chemically reactive. Many radicals spontaneously dimerize. Most ...

4. Free-radical reaction - Wikipedia

   en.wikipedia.org/wiki/Free-radical_reaction

   A free-radical reaction is any chemical reaction involving free radicals. This reaction type is abundant in organic reactions . Two pioneering studies into free radical reactions have been the discovery of the triphenylmethyl radical by Moses Gomberg (1900) and the lead-mirror experiment [ 1 ] described by Friedrich Paneth in 1927.

5. List of unsolved problems in chemistry - Wikipedia

   en.wikipedia.org/wiki/List_of_unsolved_problems...

   This is a list of unsolved problems in chemistry. Problems in chemistry are considered unsolved when an expert in the field considers it unsolved or when several experts in the field disagree about a solution to a problem.

6. Free-radical addition - Wikipedia

   en.wikipedia.org/wiki/Free-radical_addition

   Chain propagation: A radical reacts with a non-radical to produce a new radical species; Chain termination: Two radicals react with each other to create a non-radical species; In a free-radical addition, there are two chain propagation steps. In one, the adding radical attaches to a multiply-bonded precursor to give a radical with lesser bond ...

7. Hydroxyl radical - Wikipedia

   en.wikipedia.org/wiki/Hydroxyl_radical

   Most notably hydroxyl radicals are produced from the decomposition of hydroperoxides (ROOH) or, in atmospheric chemistry, by the reaction of excited atomic oxygen with water. It is also an important radical formed in radiation chemistry, since it leads to the formation of hydrogen peroxide and oxygen , which can enhance corrosion and stress ...

8. Stable phosphorus radicals - Wikipedia

   en.wikipedia.org/wiki/Stable_phosphorus_radicals

   Stable and persistent phosphorus radicals are phosphorus-centred radicals that are isolable and can exist for at least short periods of time. [1] Radicals consisting of main group elements are often very reactive and undergo uncontrollable reactions, notably dimerization and polymerization . [ 2 ]

9. Cage effect - Wikipedia

   en.wikipedia.org/wiki/Cage_effect

   In free radical polymerization, radicals formed from the decomposition of an initiator molecule are surrounded by a cage consisting of solvent and/or monomer molecules. [6] Within the cage, the free radicals undergo many collisions leading to their recombination or mutual deactivation. [5] [6] [9] This can be described by the following reaction: