Identify the incorrect statement about [2024]

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Q.
Identify the incorrect statement about ${PCl}_{5} .$ [2024]

1 ${PCl}_{5}$ possesses two different $Cl - P - Cl$ bond angles.

2 All five $P - Cl$ bonds are identical in length.

3 ${PCl}_{5}$ exhibits $s p^{3} d$ hybridisation.

4 ${PCl}_{5}$ consists of five $P - Cl$ (sigma) bonds.

Ans.
(2)

As the axial bond pairs suffer more repulsive interaction than the equatorial bond pairs, therefore, axial bonds (90°) have been found to be slightly longer and hence slightly weaker than the equatorial bonds (120°).

Solution

Q.
Identify the incorrect statement about ${PCl}_{5} .$ [2024]

1 ${PCl}_{5}$ possesses two different $Cl - P - Cl$ bond angles.

2 All five $P - Cl$ bonds are identical in length.

3 ${PCl}_{5}$ exhibits $s p^{3} d$ hybridisation.

4 ${PCl}_{5}$ consists of five $P - Cl$ (sigma) bonds.

Ans.
(2)

As the axial bond pairs suffer more repulsive interaction than the equatorial bond pairs, therefore, axial bonds (90°) have been found to be slightly longer and hence slightly weaker than the equatorial bonds (120°).

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Solution

Q. Identify the incorrect statement about PCl5. [2024]

1 PCl5 possesses two different Cl-P-Cl bond angles.

2 All five P-Cl bonds are identical in length.

3 PCl5 exhibits sp3d hybridisation.

4 PCl5 consists of five P-Cl (sigma) bonds.

Ans. (2) As the axial bond pairs suffer more repulsive interaction than the equatorial bond pairs, therefore, axial bonds (90°) have been found to be slightly longer and hence slightly weaker than the equatorial bonds (120°).

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Q.
Identify the incorrect statement about ${PCl}_{5} .$ [2024]

1 ${PCl}_{5}$ possesses two different $Cl - P - Cl$ bond angles.

2 All five $P - Cl$ bonds are identical in length.

3 ${PCl}_{5}$ exhibits $s p^{3} d$ hybridisation.

4 ${PCl}_{5}$ consists of five $P - Cl$ (sigma) bonds.

Ans.
(2)

As the axial bond pairs suffer more repulsive interaction than the equatorial bond pairs, therefore, axial bonds (90°) have been found to be slightly longer and hence slightly weaker than the equatorial bonds (120°).