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4. Chemical bonding and molecular structure — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry4. Chemical bonding and molecular structure1 Mark
MCQ
The nodal plane in the $\pi-$ bond of ethene is located in
  • ✓
    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 bond
✓

Answer

Correct option: A.
the molecular plane
a
The molecular plane does not contain $\pi$ electron density. Hence, the nodal plane in $\pi$ bond is located in the molecular plane. $\pi$ electrons are present in a plane perpendicular to the molecular plane. The plane shown in diagram is the nodal plane in ethene.

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