Question

Identify the incorrect statement related to PCI₅ from the following :
(1) Three equatorial P -Cl bonds make an angle of 120º with each other
(2) Two axial P-Cl bonds make an angle of 180º with each other
(3) Axial P-Cl bonds are longer than equatorial P -Cl bonds
(4) PCI₅ molecule is non-reactive

Answer 1

In correct statement - $\bold{PCl_{5}}$ molecule is non reactive.

Step by step explanation:

• According to the VSEPR theory, the structure of $\bold{PCl_{5}}$ is trigonal bipyramidal.
• A molecule have five bonding pairs.
• $\bold{PCl_{5}}$ have five bonds among them, three equatorial P-Cl bonds. The angle between each bond is $120^{o}$.
• Hence option -(1) - Correct.
• Remaining two are axial bonds. The angle between each bond is $180^{o}$.
• Hence option -(2) - Correct.
• Axial P-Cl bonds are longer than equatorial P -Cl bonds.
• Hence option -(3) - Correct.
• $\bold{PCl_{5}}$ molecule is reactive.
• Hence, option -(4) - incorrect.

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