Give the differences between sigma bond (σ) and Pi bond (π)

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answered Jun 17, 2019 by Suhani01 (61.3k points)
selected Jun 20, 2019 by Vikash Kumar

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Sl no	sigma bond (σ)	Pi bond (π)
1.	The bond is formed by the axial overlap of the atomic orbitals.	The bond is formed by the sideway overlap of the atomic orbitals.
2.	Sigma bond is stronger since the extent of overlapping is greater.	Pi bond is weaker since the extent of overlapping is weaker
3.	Sigma bond involves overlap of ss, s-p or p-p orbitals	Pi bond involves the overlap of p-orbitals only
4.	The bond may be present between the two atoms either alone or along with pi bond.	The bond is always present between the two atoms along with a sigma bond
5.	Free rotation of the atoms around σ-bond is possible	Free rotation of the atoms around π-bond is not possible.