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What are the characteristics features of π-bond ?

(1) π-bond fired by lateral (sidewise) overlapping of atomic orbitals.

(2) lateral overlapping is only partial, so bonds formed are weaker and hence more reactive than sigma bond.

(3) Free rotation about a π- bond is not possible.

(4) π- bond is weaker than sigma bond.

(5) π-bonds are non directional, so do not determine the shape of a molecules.

(5) π- bond take part in resonance.

(6) π- bond formed by pure or anhybrid orbitals.

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