Verified Solution • 2025–26 Session moderate

QJEEM22Chcced: JEE Main 2022 Chemistry - Class 12 JEEM22Chcced Solution: PCl 5 is well known, but NCl 5 is not. because,

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

Multiple Choice Options

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

Step-by-Step Verified Solution

PCl5\mathrm{PCl}_{5} is well known but NCl5\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 d\mathrm{d} -orbitals in its valence shell which enables it to expand its octet.

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