Q82 / 200 · NEET 2024 (Re-NEET) · Chemistry

Identify the incorrect statement.

  • A
    $\mathrm{PEt}_3$ and $\mathrm{AsPh}_3$ as ligands can form $\mathrm{d} \pi$-d $\pi$ bond with transition metals
  • Correct answer
    B
    The $\mathrm{N}-\mathrm{N}$ single bond is as strong as the $\mathrm{P}-\mathrm{P}$ single bond
  • C
    Nitrogen has unique ability to form $\mathrm{p} \pi-\mathrm{p} \pi$ multiple bonds with nitrogen, carbon and oxygen
  • D
    Nitrogen cannot form $\mathrm{d} \pi-\mathrm{p} \pi$ bond as other heavier elements of its group

Solution

- $\mathrm{PEt}_3$ and $\mathrm{AsPh}_3$ as ligands can form $\mathrm{d} \pi-\mathrm{d} \pi$ bond with transition metals. - The $\mathrm{N}-\mathrm{N}$ single bond is weaker than the single $\mathrm{P}-\mathrm{P}$ bond because of high inter-electronic repulsion of the non-bonding electrons. - Nitrogen has unique ability to form $p \pi-p \pi$ multiple bonds with itself, carbon and oxygen. - Nitrogen cannot form $\mathrm{d} \pi-\mathrm{p} \pi$ bond as other heavier elements of its group.

Hence, the correct answer is option: 'B'.

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