"PCl5 is well known, but NCl5 is not. because,"

"$\\mathrm{PCl}_{5}$ is well known but $\\mathrm{NCl}_{5}$ is not because nitrogen does not have vacant d-orbitals in its valence shell. So, nitrogen cannot expand its octet. On the other hand, phosphorus has vacant $\\mathrm{d}$-orbitals in its valence shell which enables it to expand its octet."

Easy MCQ +4 / -1 PYQ · JEE Mains 2022

PCl₅ is well known, but NCl₅ is not. because,

A nitrogen is less reactive than phosphorus.
B nitrogen doesn't have d-orbitals in its valence shell. Correct answer
C catenation tendency is weaker in nitrogen than phosphorus.
D size of phosphorus is larger than nitrogen.

Solution

$\mathrm{PCl}_{5}$ is well known but $\mathrm{NCl}_{5}$ is not because nitrogen does not have vacant d-orbitals in its valence shell.<br/><br/> So, nitrogen cannot expand its octet. On the other hand, phosphorus has vacant $\mathrm{d}$-orbitals in its valence shell which enables it to expand its octet.

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Subject: Chemistry · Chapter: p-Block Elements · Topic: Group 13: Boron Family

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PCl5 is well known, but NCl5 is not. because,

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