Q19 / 90 · JEE Main 2011 · Chemistry

Which of the following statement is wrong?

  • A
    Nitrogen cannot form $d \pi-p \pi$ bond.
  • B
    Single $\mathrm{N}-\mathrm{N}$ bond is weaker than the single $\mathrm{P}-\mathrm{P}$ bond,
  • C
    $\mathrm{N}_2 \mathrm{O}_4$ has two resonance structures
  • Correct answer
    D
    The stability of hydrides increases from $\mathrm{NH}_3$ to $\mathrm{BiH}_3$ in group 15 of the periodic table

Solution

Stability of hydrides decreases down the group from $\mathrm{NH}_3$ to $\mathrm{BiH}_3$ as $\mathrm{M}-\mathrm{H}$ bond energy decreases.

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

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