Moderate

The nodal plane in the π−bond of ethene is located in:

Correct answer: A. Lies in the plane of molecules

  • A. Lies in the plane of molecules
  • B. A plane parallel to the molecular plane
  • C. A plane perpendicular to the molecular plane which bisects the carbon−carbon σ−bond at right angle
  • D. A plane perpendicular to the molecular plane which contains the carbon−carbon σ−bond.

Explanation

In ethene (C2H4), the π-bond is formed by the overlap of p-orbitals from each carbon atom. The nodal plane is where the probability of finding electrons is zero, which for the π-bond corresponds to the plane of the molecule itself. Therefore, the correct answer is that the nodal plane of the π-bond lies in the plane of the molecules. The other options incorrectly describe the orientation of the nodal plane, as they suggest positions that do not align with the actual geometry of ethene's bonding.

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Chemical bonding explains molecular shape through VSEPR theory and distinguishes sigma bonds from pi bonds. Questions involve hybridization, bond angles, dipole moment and bond energy, including how electron-pair repulsion determines geometry and how bond polarity differs from the overall polarity of a molecule.

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