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No, in aromatic compounds and some aliphatic compounds have deloclized pi bonds but in most of the alkenes and alkynes there are localized pi bonds.
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Benzene is what kind of bond type?
Benzene has covalent bonds. Each of the six carbons in benzene is sp2 hybridized meaning the ring has both sigma bonds and pi bonds. Benzene is aromatic meaning its pi electrons are delocalized and form a pi system.
Electrons in bonds remain localized between two atoms Electrons in bonds can become delocalized between more than two atoms?
Electrons in SIGMA bonds remain localized between two atoms, Electrons in PI bonds can become delocalized between more than two atoms?
Are Pi bonds always found in single bonds?
no, pi bonds are only found in double and triple bonds. Sigma bonds are the ones in single bonds.
Why benzene cannot decolourize KMnO4 while alkenes can decolorize?
KMnO4 will add across the double bond of alkenes (or alkynes) resulting in the docolouring of KMnO4 but not an alkane such as ethane.
Would you expect SO3 to exhibit delocalized pi bonding?
yes
Are the pie bonds in NO2- delocalized?
they are delocalized.
Benzene is what kind of bond type?
Benzene has covalent bonds. Each of the six carbons in benzene is sp2 hybridized meaning the ring has both sigma bonds and pi bonds. Benzene is aromatic meaning its pi electrons are delocalized and form a pi system.
Electrons in bonds remain localized between two atoms Electrons in bonds can become delocalized between more than two atoms?
Electrons in SIGMA bonds remain localized between two atoms, Electrons in PI bonds can become delocalized between more than two atoms?
Benzene ring has three pi-bonds in it but is still quite stable.explain?
Benzene has a property called resonance. Because of this, the three pi-bonds in benzene act as a rather delocalized single pi-structure. So, benzene does not actually have 3 distinct pi-bonds. This pi-structure is stable, which explains why benzene is more stable than it would be if it had 3 pi-bonds.
Are Pi bonds always found in single bonds?
no, pi bonds are only found in double and triple bonds. Sigma bonds are the ones in single bonds.
Why benzene cannot decolourize KMnO4 while alkenes can decolorize?
KMnO4 will add across the double bond of alkenes (or alkynes) resulting in the docolouring of KMnO4 but not an alkane such as ethane.
Would you expect SO3 to exhibit delocalized pi bonding?
yes
What bonds are formed by delocalized electrons in an Electron Sea?
metallic bond
A key distinctive feature of metallic bonds is that they?
are formed by electrons that are delocalized throughout the object bonded by the metallic bonds.
Why c c bonds in benzene are intermediate in length between single and double c c bonds?
Because in benzene molecule the pi electrons are delocalized (continuously changing their position within the hexagonal ring), so there are no fixed single and double bonds but are in mid of single and double bond character.
How many pi bonds are present in CH3NO2?
only 1.
How many pi bond in h2o?
You can think of pi bonds in the terms of pi electrons as well which will become more important in terms of aromaticity. A Triple bond has 1 sigma bond & 2 pi bonds. There are 6 electrons in a triple bond; 2 sigma electrons and 4 pi electrons. The two unhybridized p orbitals on each atom on either side of the triple bond are perpendicular to each other. So, if you are trying to determine the number of pi electrons in an aromatic monocyclic compound and you have an uninterrupted combination of sp & sp2 orbitals (sp3 does not have p orbitals), whenever you come across a triple bond you would add 4 pi electrons and for a double bond you would add 2 pi electrons. The important thing to remember though is if the question asks for the number of electrons delocalized in the ring because of the aforementioned p orbitals in a triple bond being perpendicular only 2 of the 4 available pi electrons would delocalize in the ring. The really dirty trick is that Huckel's rule applies to electrons in the cloud, delocalized electrons.
