Differentiate Sigma and pi bond

Dear Student,



Difference between a sigma and a pi bond.-

Sigma (σ) Bond Pi (π) Bond
(a)  the bond is formed by the axial overlap of the atomic orbitals The bond is formed by the sidewise overlap of atomic orbitals.
(b)  the overlap is large & a strong bond is formed The overlap is small & weak bond is formed
(c) The electron cloud is symmetrical about the internuclear axis The electron cloud is unsymmetrical.
(d ) all the s orbitals & only one lobe of p orbital is involved in overlapping
S orbital doesn't take part in bond formation, while both lobes of p orbital take part in overlapping
(e)  the bond can also be formed in the absence of pie bond. The bond cannot be formed in the absence of sigma bond.


 
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