Question

Which of the following oxide of nitrogen is ionic?

• A. NO
• B. $N_2{O}_3$
• C. $N_2{O}_5$
• D. $N{O}_2$

Answer 1

Answer: (C)

$N_2{O}_5$

$N_2{O}_5$ is ionic oxide. In solution, it exists as a mixture of $N{O}_2^{+}$ cation and $N{O}_3^{-}$ anion.
$N_2{O}_5\to N{O}_2^{+}+N{O}_3^{-}$.