Question

The nodal plane in the `pi`-bond of ethene is located in
A. The molecular plane
B. A plane parallel to the molecular plane
C. A plane perpendicular to the molecular plane with bisects the carbon-carbon `sigma`-bond at right angle
D. A plane perpendicular to the molecular plane which contains the carbon carbon `sigma` bond

Answer 1

Correct Answer - A

This `pi`-bond is formed by sideways overlapping of two p-orbitals of two C-atoms. These p-orbitals are perpendicular to the plane containing ethane molecule , therefore, molecular plane does not have any `pi`-electron density and nodal plane lies along the molecular plane for `pi`-electrons.