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Distinguish Between a Sigma and a Pi Bond. - CBSE (Science) Class 11 - Chemistry

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Question

Distinguish between a sigma and a pi bond.

Solution

The following are the differences between sigma and pi-bonds:

Sigma (σ) Bond Pi (π) Bond
It is formed by the end to end overlap of orbitals It is formed by the lateral overlap of orbitals.
The orbitals involved in the overlapping are s–ss–p, or p–p These bonds are formed by the overlap of p–p orbitals only
It is a strong bond. It is weak bond.
The electron cloud is symmetrical about the line joining the two nuclei. The electron cloud is not symmetrical.
It consists of one electron cloud, which is symmetrical about the internuclear axis. There are two electron clouds lying above and below the plane of the atomic nuclei.
Free rotation about σ bonds is possible. Rotation is restricted in case of pi-bonds
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APPEARS IN

 NCERT Solution for Chemistry Textbook for Class 11 (2018 to Current)
Chapter 4: Chemical Bonding and Molecular Structure
Q: 32 | Page no. 131
Solution Distinguish Between a Sigma and a Pi Bond. Concept: Hybridisation - Types of Hybridisation.
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