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

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

Nitrogen atom is much smaller than phosphorus

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NEET UG CHEMISTRY MCQ: CHEMICAL BONDING & MOLECULAR STRUCTURE

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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 2

d

-orbitals

The correct answer is A because nitrogen, being a second-period element, lacks available 2d orbitals to expand its octet and form five bonds, unlike phosphorus which has vacant 3d orbitals.

NEET UG CHEMISTRY MCQ: CHEMICAL BONDING & MOLECULAR STRUCTURE

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