Question

Which of the following describes the bonds in PCl₅?

• A. 2 axial and 3 equatorial
• B. 3 axial and 2 equatorial
• C. 4 axial and 5 equatorial
• D. 5 axial and 4 equatorial

Answer 1

The correct option is A

2 axial and 3 equatorial

The explanation for the Correct option-

(a) 2 axial and 3 equatorial

• ${\mathrm{PCl}}_5$ possesses trigonal bipyramidal geometry in which there are two types of bonds: equitorial and axial bonds.
• Axial bonds are inclined at $90°$. Equatorial bonds are inclined at$120°$.
• In the case of axial bonds, the bond angle is less as compared to the equatorial bond.
• There are total two axial and three equitorial bonds in ${\mathrm{PCl}}_5$.

Hence, the correct option is 2 axial and 3 equatorial

The explanation for incorrect options-

Since, the correct number of axial and equitorial bonds in the given compound is 2 and 3 respectively. Therefore, options (b), (c) and (d) stand incorrect.

Hence, the correct option is (a) 2 axial and 3 equatorial.