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Which of the following is not correct? ...

Which of the following is not correct?
(i) There can be more than one sigma bond between two atoms.
(ii) Two p orbitals always overlap laterally.
(iii) A sigma bond has no free rotation around its axis.

A

(i), (ii)

B

(ii), (iii)

C

(i), (iii)

D

(i), (ii), (iii)

Text Solution

Verified by Experts

The correct Answer is:
D
There is always one sigma bond in multiple bonds between atoms. Two p orbitals can have axial overlap to form a sigma bond. A sigma bond has practically free rotation around its axis.
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Knowledge Check

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

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

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

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

  • Which of the following statements in incorrect for sigma and pi -bonds formed between two carbon atoms ?

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