Chemical Bonding - Result Question 4
####4. The nodal plane in the $\pi$-bond of ethene is located in
(a) the molecular plane
(2002, 3M)
(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
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Answer:
Correct Answer: 4. (a)
Solution:
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.
