Q. According to the Valence bond theory, which statement is incorrect regarding bonding between two carbon atoms?

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A sigma(σ) bond is weaker than a Pi

A sigma bond is stronger than a Pi bond.

A double bond is stronger than a single bond

A double bond is shorter than a single bond

Solution:

A bond is stronger than a bond.
Sigma bonds are formed by head-on overlap of unhybridised orbitals and hybridized orbitals . Hence, bond are strong bonds. Where as Pi bonds are formed by side-wise overlap of unhybridised p and d orbitals. Hence bonds are weak bonds.

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