Question

Identify the incorrect statement related to $PC{l}_5$ from the following:

• A. Axial P —Cl bonds are longer than equatorial P—Cl bonds
• B. $PC{l}_5$ molecule is non-reactive
• C. Three equatorial P - Cl bonds make an angle of 120° with each other
• D. Two axial P - Cl bonds make an angle of 180° with each other

Answer 1

Answer: (B)

(1) True
(3) True
Axial bond : 240 pm
Equatorial bond : 202 pm
(4) False
Due to longer and hence weaker axial bonds, $PC{l}_5$ is a reactive molecule.