1. Three equatorial P-Cl bonds make an angle of 120 ^° with each other 2. Two axial P-Cl bonds make an angle of 180 ^° with each other 3. Axial P-Cl bonds are longer than equatorial P-Cl bonds 4. PCl ₅ molecule is non-reactive

Answer: 4. PCl ₅ molecule is non-reactive PCl₅ is trigonal bipyramidal. Three equatorial P-Cl bonds are at 120 to each other: correct. Two axial bonds are at 180: correct. Axial bonds are longer (more repulsion from the equatorial pairs): correct. PCl₅ is highly reactive (for example it hydrolyses violently and chlorinates alcohols), so 'non-reactive' is incorrect. Answer: option (4).

Topic: General trends, Group 15 and 16· p-Block Elements

Identify the incorrect statement related to PCl_5 from the following :

1. Three equatorial P-Cl bonds make an angle of 120\(^\circ\) with each other

2. Two axial P-Cl bonds make an angle of 180\(^\circ\) with each other

3. Axial P-Cl bonds are longer than equatorial P-Cl bonds

4. PCl\(_5\) molecule is non-reactive

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Answer: 4. PCl\(_5\) molecule is non-reactive

\(\mathrm{PCl_5}\) is trigonal bipyramidal.

Three equatorial P-Cl bonds are at 120 to each other: correct.
Two axial bonds are at 180: correct.
Axial bonds are longer (more repulsion from the equatorial pairs): correct.
\(\mathrm{PCl_5}\) is highly reactive (for example it hydrolyses violently and chlorinates alcohols), so 'non-reactive' is incorrect.

Answer: option (4).

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report

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