${\rm{PC}}{{\rm{l}}_5}$ exists but ${\rm{NC}}{{\rm{l}}_5}$ does not because:

${\rm{NC}}{{\rm{l}}_5}$ is unstable

Nitrogen atom is much smaller than p

Nitrogen is highly highly inert

NEET UG CHEMISTRY MCQ: P-BLOCK ELEMENTS

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\mathrm{PC}{\mathrm{l}_5}

exists but

\mathrm{NC}{\mathrm{l}_5}

does not because:

View answer and explanation

Correct option: A

Nitrogen has no vacant 2d-orbitals

Option A (Nitrogen has no vacant 2d-orbitals) is correct because nitrogen, being a second-period element, does not have available 2d orbitals to expand its valence shell and form five bonds, unlike phosphorus.

NEET UG CHEMISTRY MCQ: P-BLOCK ELEMENTS

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