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 which 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

Answer: (A)

Pi bond is formed by the p-orbitals whose lobes have minima
in the plane of molecule, hence molecular plane is the nodal
plane of pi-bond.