Question

Identify the incorrect statement related to PCl₅ from the following: 

(a) Two axial P–Cl bonds make an angle of 180° with each other 

(b)  Axial P–Cl bonds are longer than equatorial P–Cl bonds 

(c)  PCl₅ molecule is non-reactive

(d) Three equatorial P–Cl bonds make an angle of 120° with each other 

Answer 1

The correct option is (c) PCl₅ molecule is non-reactive.

(b) True:

 Axial bond : 240 pm

Equatorial bond : 202 pm

(c) PCl₅ is reactive molecule due to long and thus, weak axial bonds.

(d) True