Indicate the wrong statement.

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A sigma bond has no free rotation along its axis.

p-orbitals always have only sidewise overlapping.

s-orbitals never form $π$ -bonds.

There can be more than one sigma bond between two atoms.

answer is A, D.

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Detailed Solution

Sigma bonds develop when the atomic orbitals on the internuclear axis coincide. Additionally, pi bonds are created as a result of the sideways overlapping of orbitals. There can therefore be just one sigma link. While the sigma bond is free to spin, the rotation is constrained due to sidewise overlapping. Pi bonds are stronger than sigma bonds because of the double stability that the sidewise overlapping also gives.

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