Assertion (A): $σ$ bond is formed by the axial overlap of the two orbitals.
Reason (R) : $π$ bond is formed by the lateral overlap of two orbitals.

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Both A and R are true and R is not correct explanation of A

A is incorrect and R is correct

Both A and R are true and R is the correct explanation of A

A is correct and R is incorrect

answer is B.

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Detailed Solution

“A covalent bond is formed by the end on end overlapping (axial overlapping) of half filled orbitals of two atoms along with their inter nuclear axis is called

σ

- bond”.

“A covalent bond is formed by side wise overlapping or lateral overlapping of two p-orbitals with half filled or one p and one d orbital with half filled of two atoms is called a $π - bond$ . The $π - bond$ forms always after the $σ - bond$ is formed.