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Q.

Which of the following statement is wrong?

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a

A Ïƒ-bond is shorter than a Ï€-bond.

b

Bond energies of Ïƒ and Ï€ bonds are of the order of 264 and 347 kJ mol-1

c

Free rotation of atoms about a Ïƒ-bond is allowed but not in case of a Ï€-bond.

d

A Ïƒ-bond determines the direction between C-atoms but a Ï€-bond has no primary effect which leads to bonding

answer is B.

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Detailed Solution

Bond energy of Ïƒ-bond is greater than that of Ï€-bond
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