Why the Carbon atom at triple bond position in Benzyne not sp hybridized?Why are they sp2 hybridized in place of sp?

Although there is a triple bond present in Benzyne, still the 2 carbon atoms containing the triple bond are sp2 hybridized to maintain the geometry of the ring structure, else the ring would break.

 

Benzyne is formed from benzene via a free radical elimination reaction in which the pi-bond between the two carbon atoms is formed by sp2 hybridized orbitals.

This is the only case in which a pi-bond is formed by hybridized orbitals.

Bro it is a special case and so you should just remember it as an exception and it  will be helpul for you if a a question comes from this part. 

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