Q13 / 200 · Manipal (MET) 2013 · Chemistry

Which one of the following statments about NO is wrong?

  • A
    NO is an odd electron molecule
  • B
    It is a free radical and highly reactive
  • C
    It readily forms complexes with transition metal ions
  • Correct answer
    D
    It can be prepared by heating $\mathrm{NH}_4 \mathrm{NO}_3$ at $250^{\circ} \mathrm{C}$

Solution

It can be prepared in the laboratory by reacting sodium, nitrite $\left(\mathrm{NaNO}_2\right)$ with a reducing agent such as $\mathrm{Fe}^{2+}$ in an acidic medium. $\mathrm{NH}_4 \mathrm{NO}_3$ on heating at $250^{\circ} \mathrm{C}$ gives $\mathrm{N}_2 \mathrm{O}$.

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

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