Class 11 NEET Chemistry Chemical Bonding And Molecular Structure Part 1

Question : 60 of 100

Marks: +1, -0

Which one of the following statements is not correct for sigma- and pi- bonds formed between two carbon atoms?

(2003)

Sigma-bond is stronger than a pi-bond.
Bond energies of sigma- and pi-bonds are of the order of 264kJ/mol and 347kJ/mol, respectively.
Free rotation of atoms about a sigma bond is allowed but not in case of a pi bond.
Sigma-bond determines the direction between carbon atoms but a pi-bond has no primary effect in this regard.

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