Select the correct statement aboutπ - bonds in valence bond theory. A)A π bond is stronger than a sigma bond. B)A π bond can hold 4 electrons, two above and two below the σ-bond axis. C)A carbon-carbon double bond consists of twoπ bonds. D)A π bond is the same strength as a σ bond. E)A π bond between two carbon atoms restricts rotation about the C-C axis.

Question

Quizplus · Accepted Answer

A π bond restricts rotation about the axis between two carbon atoms because it is formed from the sideways overlap of p orbitals, creating a region of electron density above and below the bond axis. This electron density acts as a physical barrier to rotation, unlike in a single bond (σ bond) where rotation is relatively free.

Select the Correct Statement Aboutπ - Bonds in Valence Bond