Assertion (A): Only one $σ$ bond should be formed between two atoms
Reason (R) : $π$ bond is not formed by s 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

A is correct and R is incorrect

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

answer is B.

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Detailed Solution

pi bond is never formed by s-orbitals of two atoms. Because ‘s’ sub shell has only one orbital. Therefore it forms always only sigma bond. In any molecule even though there is multiple bond present but only one sigma bond is formed between two atoms and the other bonds should have pi bonds.

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