Question:
Which of the following statements are correct about the $PCl_5$ molecule?
(i) It has trigonal bipyramidal geometry.
(ii) It has three equatorial and two axial bonds.
(iii) The equatorial bond pairs suffer more repulsive interaction from the axial bond pair.
(iv) The equatorial bonds are slightly weaker than axial bonds.
(v) The hybridization involved in the molecule is $sp^3d$.
Which of the following statements are correct about the $PCl_5$ molecule?
(i) It has trigonal bipyramidal geometry.
(ii) It has three equatorial and two axial bonds.
(iii) The equatorial bond pairs suffer more repulsive interaction from the axial bond pair.
(iv) The equatorial bonds are slightly weaker than axial bonds.
(v) The hybridization involved in the molecule is $sp^3d$.
(ii) It has three equatorial and two axial bonds.
(iii) The equatorial bond pairs suffer more repulsive interaction from the axial bond pair.
(iv) The equatorial bonds are slightly weaker than axial bonds.
(v) The hybridization involved in the molecule is $sp^3d$.
Show Hint
Axial bonds in $PCl_5$ are longer and weaker due to more repulsion.
Updated On: Apr 24, 2026
- (i), (ii), (v)
- (ii), (iii), (iv)
- (i), (ii), (iii)
- (ii), (iv), (v)
- (i), (ii), (v)
Show Solution
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The Correct Option is
Solution and Explanation
Concept:
• $PCl_5$ structure and VSEPR theory
Step 1: Geometry
Trigonal bipyramidal → correct
Step 2: Bond arrangement
3 equatorial + 2 axial → correct
Step 3: Check statements
(iii) False (axial suffer more repulsion)
(iv) False (axial bonds weaker)
(v) True ($sp^3d$ hybridization) Final Conclusion:
Option (E)
• $PCl_5$ structure and VSEPR theory
Step 1: Geometry
Trigonal bipyramidal → correct
Step 2: Bond arrangement
3 equatorial + 2 axial → correct
Step 3: Check statements
(iii) False (axial suffer more repulsion)
(iv) False (axial bonds weaker)
(v) True ($sp^3d$ hybridization) Final Conclusion:
Option (E)
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