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- Unpaired_electron abstract "In chemistry, an unpaired electron is an electron that occupies an orbital of an atom singly, rather than as part of an electron pair. As the formation of electron pairs is often energetically favourable, either in the form of a chemical bond or as a lone pair, unpaired electrons are relatively uncommon in chemistry, because an entity that carries an unpaired electron is usually rather reactive. In organic chemistry they typically only occur briefly during a reaction on an entity called a radical; however, they play an important role in explaining reaction pathways.Radicals are uncommon in s- and p-block chemistry, since the unpaired electron occupies a valence p orbital or an sp, sp2 or sp3 hybrid orbital. These orbitals are strongly directional and therefore overlap to form strong covalent bonds, favouring dimerisation of radicals. Radicals can be stable if dimerisation would result in a weak bond or the unpaired electrons are stabilised by delocalisation. In contrast, radicals in d- and f-block chemistry are very common. The less directional, more diffuse d and f orbitals, in which unpaired electrons reside, overlap less effectively, form weaker bonds and thus dimerisation is generally disfavoured. These d and f orbitals also have comparatively smaller radial extension, disfavouring overlap to form dimers.Relatively more stable entities with unpaired electrons do exist, e.g. the nitric oxide molecule has one. According to Hund's rule, the spins of unpaired electrons are aligned parallel and this gives these molecules paramagnetic properties.The most stable examples of unpaired electrons are found on the atoms and ions of lanthanides. The incomplete f-shell of these entities does not interact very strongly with the environment they are in and this prevents them from being paired. The ion with the largest number of unpaired electrons is Gd3+ with seven unpaired electrons.".
- Unpaired_electron thumbnail Periodic_Table_with_unpaired_electrons.svg?width=300.
- Unpaired_electron wikiPageID "18679245".
- Unpaired_electron wikiPageLength "2576".
- Unpaired_electron wikiPageOutDegree "21".
- Unpaired_electron wikiPageRevisionID "629474280".
- Unpaired_electron wikiPageWikiLink Atom.
- Unpaired_electron wikiPageWikiLink Atomic_orbital.
- Unpaired_electron wikiPageWikiLink Category:Chemical_bonding.
- Unpaired_electron wikiPageWikiLink Category:Quantum_chemistry.
- Unpaired_electron wikiPageWikiLink Chemical_bond.
- Unpaired_electron wikiPageWikiLink Chemistry.
- Unpaired_electron wikiPageWikiLink Delocalisation.
- Unpaired_electron wikiPageWikiLink Delocalized_electron.
- Unpaired_electron wikiPageWikiLink Dimer_(chemistry).
- Unpaired_electron wikiPageWikiLink Dimerisation_(chemistry).
- Unpaired_electron wikiPageWikiLink Electron.
- Unpaired_electron wikiPageWikiLink Electron_pair.
- Unpaired_electron wikiPageWikiLink Gadolinium.
- Unpaired_electron wikiPageWikiLink Hunds_rule.
- Unpaired_electron wikiPageWikiLink Hunds_rule_of_maximum_multiplicity.
- Unpaired_electron wikiPageWikiLink Lanthanide.
- Unpaired_electron wikiPageWikiLink Lone_pair.
- Unpaired_electron wikiPageWikiLink Nitric_oxide.
- Unpaired_electron wikiPageWikiLink Orbital_hybridisation.
- Unpaired_electron wikiPageWikiLink Organic_chemistry.
- Unpaired_electron wikiPageWikiLink Paramagnetism.
- Unpaired_electron wikiPageWikiLink Radical_(chemistry).
- Unpaired_electron wikiPageWikiLink Valence_(chemistry).
- Unpaired_electron wikiPageWikiLink File:Periodic_Table_with_unpaired_electrons.svg.
- Unpaired_electron wikiPageWikiLinkText "unpaired electron".
- Unpaired_electron wikiPageWikiLinkText "unpaired valency electrons".
- Unpaired_electron wikiPageWikiLinkText "unpaired".
- Unpaired_electron hasPhotoCollection Unpaired_electron.
- Unpaired_electron wikiPageUsesTemplate Template:Reflist.
- Unpaired_electron subject Category:Chemical_bonding.
- Unpaired_electron subject Category:Quantum_chemistry.
- Unpaired_electron hypernym Electron.
- Unpaired_electron type Mechanic.
- Unpaired_electron comment "In chemistry, an unpaired electron is an electron that occupies an orbital of an atom singly, rather than as part of an electron pair. As the formation of electron pairs is often energetically favourable, either in the form of a chemical bond or as a lone pair, unpaired electrons are relatively uncommon in chemistry, because an entity that carries an unpaired electron is usually rather reactive.".
- Unpaired_electron label "Unpaired electron".
- Unpaired_electron sameAs Electró_desaparellat.
- Unpaired_electron sameAs Electrón_desapareado.
- Unpaired_electron sameAs الکترون_جفتنشده.
- Unpaired_electron sameAs Elettrone_spaiato.
- Unpaired_electron sameAs 不対電子.
- Unpaired_electron sameAs 홀전자.
- Unpaired_electron sameAs Ongepaard_elektron.
- Unpaired_electron sameAs m.04gqywz.
- Unpaired_electron sameAs Неспарений_електрон.
- Unpaired_electron sameAs Q374793.
- Unpaired_electron sameAs Q374793.
- Unpaired_electron sameAs 不成對電子.
- Unpaired_electron wasDerivedFrom Unpaired_electron?oldid=629474280.
- Unpaired_electron depiction Periodic_Table_with_unpaired_electrons.svg.
- Unpaired_electron isPrimaryTopicOf Unpaired_electron.
