Some Characteristic Features of pi bond
Answers
Pi-Bond:-
The covalent chemical bond which is formed by lateral overlapping of half-filled p-orbitals of atoms is known as π-bond.
Characteristic features of π-Bond:-
✦In general,Pi Bonds are weaker than sigma bonds as the overlapping takes place at the side of two lobes of p-orbital and hence the extent of overlapping is less than that of a sigma bond.
✦During the formation of π bonds, the axes of the atomic orbitals are parallel to each other whereas the overlapping is perpendicular to the internuclear axis.
✦All the atoms of molecules with pi bond lie in the same plane .
✦The electron density is concentrated in the region perpendicular to the bond axis.
✦The overlapping orbitals are always pure orbitals.i.e, unhybridized orbitals.
✦Double bonds consist of one sigma and one pi bond,whereas a typical triple bond is made up of two π bonds and one σ bond.
✦Atoms with pi bond are less reactive.
✦It restricts free rotation of orbitals.
✦There is no symmetry .
✦It does'nt determine the shape of molecule.
✦Pi bonds are found in alkenes and alkynes.
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