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A 4-center 2-electron (4c–2e) bond is a type of chemical bond in which four atoms share two electrons in bonding, with a net bond order of 1 ⁄ 2.This type of bonding differs from the usual covalent bond, which involves two atoms sharing two electrons (2c–2e bonding).
Immortal Game animation. Anderssen shown playing as White. The Immortal Game was a chess game played in 1851 between Adolf Anderssen and Lionel Kieseritzky during the London 1851 chess tournament, an event in which both players participated.
In our lectures recently (Dr F Garcia - University of Cambridge) we had some examples of Al2 4c2e bonds. Should I include them as examples ont this page? —Preceding unsigned comment added by 193.60.90.97 20:50, 3 March 2008 (UTC)
This article relating to the superfamily Tischerioidea is a stub. You can help Wikipedia by expanding it.
The Palazzo Corsini is a prominent late-baroque palace in Rome, erected for the Corsini family between 1730 and 1740 as an elaboration of the prior building on the site, a 15th-century villa of the Riario family, based on designs of Ferdinando Fuga.
Phlebopus tropicus has been shown to form a crust of mycelium around the roots of species of Citrus in Brazil, covering colonies of the comstock mealybug Pseudococcus comstocki which attack the roots of these plants after they have been carried there by ants (Solenopsis saevissima var. moelleri); these mycelial crusts are called "criptas" by Brazilian writers.
Blowing a double-digit lead in the fourth quarter was bad for the New York Knicks. Losing to the Los Angeles Lakers in overtime was worse. Losing Jalen Brunson would be another level. The Knicks ...
The total population of the unicolored blackbird, at over 10,000 mature individuals, is believed to be stable and it has a very wide range. It is a fairly common species but its distribution is somewhat patchy.